var ouinitdone=false;

function ou_init_new()
{
	ck = document.cookie;
	if (ck.indexOf("OUMOBILE=1") >= 0)
	{
		var url = document.location.href;
		if (url.indexOf("fullsize=1") > 0)
			document.cookie = "OUMOBILE=;domain=open.ac.uk;path=/;expires=Thu, 01-Jan-1970 00:00:01 GMT";
		else
			document.location.href="mobile/";
	}
	if (ouinitdone) return;
	ouinitdone=true;
	ou_linksline_new();
}

function ou_linksline_new()
{
	if (navigator.appName == "Netscape" && parseFloat(navigator.appVersion) < 5) return;
	sb_c = document.cookie + ";";
	sb_p = sb_c.indexOf("SAMSsession");
	if (sb_p >= 0) sb_p = sb_c.indexOf("%2E", sb_p);
	sb_id = "";
	sb_pi = "";
	if (sb_p >= 0)
	{
		username = "";
		sb_p2 = sb_c.indexOf("HS7BDF=");
		if (sb_p2 >= 0)
		{
			sb_p3 = sb_c.indexOf(";", sb_p2);
			sb_p4 = sb_c.indexOf("\\", sb_p2);
			if (sb_p4 > 0 && sb_p4 < sb_p3) sb_p3 = sb_p4;
			sb_nm = sb_c.substr(sb_p2+7,sb_p3-sb_p2-7);
			sb_nm2 = "";
			for (i=0 ; i < sb_nm.length ; i++)
			{
				j = sb_nm.charCodeAt(i) % 256;
				if (j >= 192 && j <= 223 && i < sb_nm.length-1)
				{
					k = sb_nm.charCodeAt(i+1) % 256;
					sb_nm2 += String.fromCharCode((j-192)*64 + (k-128));
					i++;
				}
				else
					sb_nm2 += String.fromCharCode(j);
			}
			username += sb_nm2;
		}
		sb_p2 = sb_c.indexOf("%2E", sb_p+3);
		if (sb_p2 - sb_p == 11)
		{
			sb_pi = sb_c.substr(sb_p+3,8);
			ele = document.getElementById("ou-person");
			if (ele)
			{
				if (username.length == 0)
					ele.appendChild(document.createTextNode(sb_pi));
				else
					ele.appendChild(document.createTextNode(username + " (" + sb_pi + ")"));
				ele.style.display='inline';
			}
			ele = document.getElementById("ou-studenthome");
			if (ele) ele.style.display='inline';
		}
		else
		{
			sb_id = "";
			sb_sru = 0;
			sb_p = sb_c.indexOf("%2E", sb_p2+3);
			if (sb_p - sb_p2 == 11) 
				sb_id = sb_c.substr(sb_p2+3,8);
			else
			{
				sb_p2 = sb_c.indexOf("%2E", sb_p+3);
				if (sb_p2 - sb_p == 11)
					sb_id = sb_c.substr(sb_p+3,8);
				else
				{
					sb_p = sb_c.indexOf("%2E", sb_p2+3);
					if (sb_p - sb_p2 == 11)
						sb_id = sb_c.substr(sb_p2+3,8);
					else
					{
						sb_z = sb_c.indexOf("SAMS2session");
						if (sb_z >= 0)
						{
							sb_z2 = sb_c.indexOf(";", sb_z);
							sb_z3 = sb_c.indexOf("samsSelfRegID=", sb_z);
							if (sb_z3 > sb_z && sb_z3 < sb_z2) sb_sru = 1;
						}
					}
				}
			}
			ele = document.getElementById("ou-person");
			if (ele)
			{
				if (sb_id.length > 0)
				{
					if (username.length > 0) 
						username += " (" + sb_id + ")";
					else
						username = sb_id;
				}
				if (username.length > 0)
				{
					ele.appendChild(document.createTextNode(username));
					ele.style.display='inline';
				}
			}
			if (sb_sru == 0)
			{
				ele = document.getElementById("ou-studenthome");
				if (ele) ele.style.display='inline';
				ele = document.getElementById("ou-tutorhome");
				if (ele) ele.style.display='inline';
				ele = document.getElementById("ou-intranet");
				if (ele) ele.style.display='inline';
			}
			else
			{
				ele = document.getElementById("ou-myaccount");
				if (ele) ele.style.display='inline';
			}
		}
		ele = document.getElementById("ou-signout");
		if (ele) ele.style.display='inline';
		ele = document.getElementById("ou-signin1");
		if (ele) ele.style.display='none';
	}
	else
	{
		ele = document.getElementById("ou-signin2");
		ele.href="https://msds.open.ac.uk/signon/sams001.aspx?nsh=1&URL=" + document.location.href;
	}
}

function validate()
{
	f1 = document.forms["destform"];
	if (f1.username.value.length < 3) { alert("Please enter your username"); return false; }
	if (f1.password.value.length < 1) { alert("Please enter your password"); return false; }
	return true;
}

function show(num, id)
{
	if (num == 1) document.getElementById(id).innerHTML = "Your OU Computer Username was sent to you in the letter confirming your course registration, or in the letter that notified you of your username and password.<br /><br />If you don't know your OU Computer Username or have forgotten it, you can enter your OU Personal Identifier instead.";
	if (num == 2) document.getElementById(id).innerHTML = "If you are signing on for the first time, you will need to use the initial password sent to you in the letter confirming your course registration or letter that notified you of your username and password. Otherwise use the password you used last time. The OU does not routinely change your password.";
	document.getElementById(id).style.position = 'absolute';
	document.getElementById(id).style.visibility = 'visible';
}

function hide(id)
{
	document.getElementById(id).style.position = '';
	document.getElementById(id).style.visibility = '';
	document.getElementById(id).innerHTML = '';
}

function fetchpi()
{
	if (navigator.appName == "Netscape" && parseFloat(navigator.appVersion) < 5) return "";
	sb_c = document.cookie + ";";
	sb_p = sb_c.indexOf("SAMSsession");
	if (sb_p >= 0) sb_p = sb_c.indexOf("%2E", sb_p);
	if (sb_p >= 0)
	{
		sb_p2 = sb_c.indexOf("%2E", sb_p+3);
		if (sb_p2 - sb_p == 11) return sb_c.substr(sb_p+3,8);
	}
	// Check for SRU
	sb_p = sb_c.indexOf("SAMS2session");
	if (sb_p >= 0)
	{
		sb_p2 = sb_c.indexOf("samsSelfRegID=", sb_p);
		sb_p3 = sb_c.indexOf(";", sb_p);
		if (sb_p2 > 0 && sb_p2 < sb_p3) return "sru";
	}
	return "";
}

function fetchid()
{
	if (navigator.appName == "Netscape" && parseFloat(navigator.appVersion) < 5) return "";
	sb_c = document.cookie + ";";
	sb_p = sb_c.indexOf("SAMSsession");
	if (sb_p >= 0) sb_p = sb_c.indexOf("%2E", sb_p);
	if (sb_p >= 0)
	{
		sb_p2 = sb_c.indexOf("%2E", sb_p+3);
		sb_p = sb_c.indexOf("%2E", sb_p2+3);
		if (sb_p - sb_p2 == 11) 
			return sb_c.substr(sb_p2+3,8);
		else
		{
			sb_p2 = sb_c.indexOf("%2E", sb_p+3);
			if (sb_p2 - sb_p == 11)
				return sb_c.substr(sb_p+3,8);
			else
			{
				sb_p = sb_c.indexOf("%2E", sb_p2+3);
				if (sb_p - sb_p2 == 11) return sb_c.substr(sb_p2+3,8);
			}
		}
	}
	return "";
}

function fetchname()
{
	if (navigator.appName == "Netscape" && parseFloat(navigator.appVersion) < 5) return "";
	sb_c = document.cookie + ";";
	sb_p = sb_c.indexOf("SAMSsession");
	if (sb_p >= 0)
	{
		sb_p2 = sb_c.indexOf("HS7BDF=");
		if (sb_p2 >= 0)
		{
			sb_p3 = sb_c.indexOf(";", sb_p2);
			sb_p4 = sb_c.indexOf("\\", sb_p2);
			if (sb_p4 > 0 && sb_p4 < sb_p3) sb_p3 = sb_p4;
			if (sb_p2 >= 0)
			{
				sb_nm = sb_c.substr(sb_p2+7,sb_p3-sb_p2-7);
				sb_nm2 = "";
				for (i=0 ; i < sb_nm.length ; i++)
				{
					j = sb_nm.charCodeAt(i) % 256;
					if (j >= 192 && j <= 223 && i < sb_nm.length-1)
					{
						k = sb_nm.charCodeAt(i+1) % 256;
						sb_nm2 += String.fromCharCode((j-192)*64 + (k-128));
						i++;
					}
					else
						sb_nm2 += String.fromCharCode(j);
				}
				return sb_nm2;
			}
		}
	}
	return "";
}

/*
   SiteTracker 5.1.13
   Copyright (C) 2008 Site Intelligence Ltd.
*/

var undefined; // For JS engines that don't support this keyword natively

if (window['siAutoTracer'] == undefined)
{
	window.siAutoTracer = true;  // Set to false if you don't want automatic page tracking
}

var siBaseDirectory   = "/includes";
var siTaggingServer   = null; // Send tags to same server as document comes from
var siCookieName      = "SIVISITOR";
var siTracerCookieName= "SITRACER";
var siLinkAttribute   = "id";  // This must either be "si:link" or "id"
var siCookieQPName    = "simigvis";
var siCookiePath      = "/";
var siCookieTimeout   = 315360000000;
var siTracerTimeout   = 1000; // ms to wait maximum for tracer to be sent
var siDomainList      = new Array(".ac.uk",".net",".co.uk");
var siCentralCookie   = false;
var siCentralReqName  = "req";
var siCentralRefName  = "refer";
var siCentralURL      = "";
var siTrackerUrl      = siBaseDirectory + "/track.gif";


//////////////////////////////////
// Do not edit below this line! //
//////////////////////////////////

var siTrackerVersion  = "5.1.13";
var siIsCookieNew	    = "N";
var siCookieValue     = null;
var siExtClickID      = "t"+(new Date()).getTime()+"h"+window.history.length;
var siClickedLinkID   = "";
var siRefClickID      = "";
var siTracerPath      = "";
var siTracerQuery     = "";
var siSendParams      = "";
var siTracerCookieIdx = 0;
var siImageSet        = new Array(1);
var siReferrer        = document.referrer;
var siRequest         = document.URL;
var siPageIDAttrName  = "si:pageID";
var siTagType         = "";
var siFormQueryLimit  = 1200;
var siSentPageTag     = false;
var siSyncTracersOutstanding = 0;
var siSyncFinishedAction = null;


function SiInternalGetLinkClickingClosure(anchor)
{
   var targetLoc = null;
   var destination = anchor.href;
   var target = anchor.getAttribute("target");
   if (target && target != "_self")
   {
      if (target == "_top") targetLoc = "top";
      else if (target == "_parent") targetLoc = "parent";
      else
      {
         if (target == "_new")
         {
            return function() { window.open(destination); }
         }
         else
         {
            targetLoc = top.frames[target];
            if (!targetLoc)
            {
               return function() { window.open(destination, target); }
            }
         }
      }
   }

   if (targetLoc == null) {
      return function() { location.href = destination; }
   }
   else
   {
      return function() { targetLoc.location.href = destination; }
   }
}


function SiEncodeString(Input)
{
  if (!Input)
  {
    return "";
  }

  var TransChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var Output     = "";
  for (var i = 0; i < Input.length; i += 3)
  {
    var NumBytesLeft = Input.length - i;
    var Value        = 0;
    Value  = (Input.charCodeAt(i) << 16) & 0x00ff0000;
    Value |= (NumBytesLeft > 1)? (Input.charCodeAt(i + 1) << 8) & 0x0000ff00 : 0;
    Value |= (NumBytesLeft > 2)? Input.charCodeAt(i + 2) & 0x000000ff : 0;
    Output += TransChars.charAt((Value & 0x00fC0000) >> 18);
    Output += TransChars.charAt((Value & 0x0003f000) >> 12);
    Output += (NumBytesLeft > 1)? TransChars.charAt((Value & 0x00000fc0) >> 6) : '_';
    Output += (NumBytesLeft > 2)? TransChars.charAt((Value & 0x0000003f)) : '_';
  }
  return Output;
}

function SiEncodeDetails(Format)
{
   var Output = "";
   for (var i = 0; i < Format.length; i++)
   {
      var Data;
      switch (Format.charAt(i))
      {
      case 'r':
         Data = siReferrer;
         break;
      case 'p':
         Data = siRequest;
         break;
      case 'd':
         Data = screen.availWidth+"x"+screen.availHeight+"x"+screen.colorDepth+"."+navigator.javaEnabled();
         if (navigator.plugins) Data += "."+navigator.plugins.length;
         break;
      case 'c':
         Data = siCookieValue;
         break;
      case 'u':
         Data = window.history.length+"."+(Math.random()*1000)+"."+(new Date()).getTime();
         break;
      case 't':
         Data = siExtClickID;
         break;
      case 'f':
         Data = siTracerPath;
         break;
      case 'q':
         Data = siTracerQuery;
         break;
      case 'g':
         Data = SiCollateTagData();
         break;
      case 'w':
         Data = siIsCookieNew;
         break;
      case 'y':
      	Data = siTagType;
      	break;
      }
      Output += SiEncodeString(Data)+"*";
   }
   return Output;
}

function SiCollateTagData()
{
	var TagData = "";

	TagData += "co=" + window.screen.colorDepth;
	TagData += "&sr=" + window.screen.width + 'x' + window.screen.height;
	today = new Date();
	if (null != today)
	{
		TagData += "&lt=" + SiFormatDate(today);
	}
	if (navigator.javaEnabled())
	{
		TagData += "&jv=1";
	}
	else
	{
		TagData += "&jv=0";
	}
	TagData += SiCollatePageRules();

	if (document.body)
	{
		var ThisPageID = document.body.getAttribute(siPageIDAttrName);
		if (ThisPageID)
		{
			TagData += "&req=" + ThisPageID;
		}
	}

	if (siClickedLinkID && siClickedLinkID.length > 0)
	{
		TagData += "&rl=" + siClickedLinkID;
	}

	if (siRefClickID.length > 0)
	{
		TagData += "&rcid=" + siRefClickID;
	}

	return TagData;
}

function SiCollatePageRules()
{
	var PageData = "";

	if (window.siIsFrameset)
	{
		PageData += "&page:fset";
	}
	if (window.siIsMenu)
	{
		PageData += "&page:menu";
	}
	if (window.siIsExtraFrame)
	{
		PageData += "&page:x-frame";
	}
	if (window.siIsRedirection)
	{
		PageData += "&page:redir";
	}
	if (window.siIsPopup)
	{
		PageData += "&page:popup";
	}

	return PageData;
}

function SiIsMenu()
{
	window.siIsMenu = true;
}

function SiIsFrameset()
{
	window.siIsFrameset = true;
}

function SiIsExtraFrame()
{
	window.siIsExtraFrame = true;
}

function SiIsRedirection()
{
	window.siIsRedirection = true;
}

function SiIsPopup()
{
	window.siIsPopup = true;
}

function SiSetPageID(id)
{
	document.body.setAttribute(siPageIDAttrName,id);
}

function SiFormatDate(date)
{
	var output = "";
	output += date.getFullYear()+"";
	output += "-";
	output += leadingZero(date.getMonth()+1);
	output += "-";
	output += leadingZero(date.getDate());
	output += "T";
	output += leadingZero(date.getHours());
	output += ":";
	output += leadingZero(date.getMinutes());
	output += ":";
	output += leadingZero(date.getSeconds());
	return output;
}

function leadingZero(n)
{
	if (n < 1) return "00";
	return (n>9?"":"0") + n;
}

function SiGetDomain()
{
  var DomainValue = null;
  var firstDot;
  var secondDot;
  var lastDot;
  var useHostname=document.location.hostname;
  if (useHostname != null)
  {
     var arIndex;
     for (arIndex = 0; (arIndex < siDomainList.length) && (DomainValue == null); arIndex++)
     {
        var tldIndex = useHostname.lastIndexOf(siDomainList[arIndex]);
        if (tldIndex > 0)
        {
           var nextDot = useHostname.lastIndexOf('.',tldIndex-1);
           if (nextDot >= 0)
           {
              DomainValue = useHostname.substring(nextDot);
           }
           else
           {
              DomainValue = "." + useHostname;
           }
        }
     }
  }
  return DomainValue;
}

function SiTrackLink(idVar)
{
	try {
	   siTagType="trace";
	
		if (/string/.test(typeof(idVar)))
		{
			siClickedLinkID = idVar;
		}
		else
		{
			siClickedLinkID = idVar.getAttribute(siLinkAttribute);
		}
	
		SiInternalTrackLink();
		return true;
   } catch (e){ return SiInternalError(e);}
}

function SiInternalTrackLink()
{
   SiInternalDoLinkTrack(SiDeferTracer);
}

function SiInternalTrackLinkImmediate()
{
   SiInternalDoLinkTrack(SiSyncTracer);
}

function SiInternalTrackLinkPassiveSend()
{
   SiInternalDoLinkTrack(SiSendTracer);
}

function SiInternalTrackLinkWait()
{
   SiInternalDoLinkTrack(SiSendTracerWithWait);
}

function SiInternalTrackLinkViaSynchronousSend(anchorTag, closure)
{
   if (!closure)
      closure = SiInternalGetLinkClickingClosure(anchorTag);

   SiInternalDoLinkTrack(SiSyncTracer, closure, siTracerTimeout);
}

function SiInternalDoLinkTrack(dispatcher, closure, timeout)
{
   siRefClickID = siExtClickID;
   siTracerPath = "http://" + document.location.hostname + siBaseDirectory + "/link";
   siTracerQuery = "";

   if (closure) {
      if (timeout) {
         dispatcher("fctgy","fdtgy", closure, timeout);
      } else {
         dispatcher("fctgy","fdtgy", closure);
      }
   } else {
      dispatcher("fctgy","fdtgy");
   }

   siClickedLinkID = "";
   siRefClickID = "";
   siTracerPath = "";
}

function SiTrackEvent(idVar)
{
	try {
	   siTagType = "trace";
	   if (/string/.test(typeof(idVar))){siClickedLinkID = idVar;}
      else{ siClickedLinkID = idVar.getAttribute(siLinkAttribute); }
	   SiInternalTrackLinkPassiveSend();
	} catch (e){SiInternalError(e);}
}

function SiTrackExternalLink(idVar,closure)
{
	try {
	   siTagType="trace";
	   if (/string/.test(typeof(idVar)))
	   {
	      siClickedLinkID = idVar;
	   }
	   else
	   {
	      siClickedLinkID = idVar.getAttribute(siLinkAttribute);
	   }
	   SiInternalTrackLinkViaSynchronousSend(idVar,closure);
	   return false;
   } catch (e){ return SiInternalError(e);}
}

function SiTrackLinkToUntagged(anchorTag)
{
	try {
		siClickedLinkID = anchorTag.getAttribute(siLinkAttribute);
	   siTagType="trace";
	   SiInternalTrackLinkImmediate();
	   siTagType = "page";
	   siTracerPath = anchorTag.href;
	   if (siTracerPath.indexOf('://') == -1)
	   {
	      if(siTracerPath.substring(0,1) != '/')
	      {
	      	var lastSlash = document.location.pathname.lastIndexOf('/');
	      	var currentDirectory = document.location.pathname.substring(0, lastSlash + 1);
	      	siTracerPath = currentDirectory + siTracerPath;
	      }
	      if(siTracerPath.substring(0,2) != '//')
	      {
	      	siTracerPath = '//' + document.location.hostname + siTracerPath;
	      }
	      siTracerPath = document.location.protocol + siTracerPath;
	   }
	   var closure = SiInternalGetLinkClickingClosure(anchorTag);
	   SiSyncTracer("fctgy","fdtgy",closure,siTracerTimeout);
	   return false;
   } catch (e){ return SiInternalError(e);}
}

function SiTrackData(query)
{
   siTracerPath = "http://" + document.location.hostname + siBaseDirectory + "/data";
   siTracerQuery = query;
   siTagType = "extra";
   SiSendTracer("fqcty","fqdty");
}

function SiAddTrackParam( name, value )
{
	try {
	   if (siSendParams != "")
	    	siSendParams += "&";
	   siSendParams += escape(name) + "=" + escape(value);
	   if (siSendParams.length >= 512)
	   	SiSendTrackParams();
	} catch (e) {SiInternalError(e);}
}

function SiSendTrackParams()
{
	if (siSendParams != "")
	{
		SiTrackData(siSendParams);
	   siSendParams = "";
	}
}

function SiSetCookie(Name,Value,Timeout)
{
  	var Expiry=new Date;
  	Expiry.setTime(Expiry.getTime()+Timeout);
 	var Domain=SiGetDomain();
  	var CookieDetails=Name+"="+Value+((siCookiePath) ? "; path=" + siCookiePath : "")+((Domain) ? "; domain="+Domain : "");
  	document.cookie=CookieDetails + "; expires="+Expiry.toGMTString();
  	if (SiGetCookie(Name) != Value)
  	{
		document.cookie=CookieDetails;
	}
}

function SiGetCookie(Name)
{
   return SiExtractPart(Name,document.cookie,";");
}

function SiExtractPart(Name,DataSource,DataEndChar)
{
  var Prefix = Name+"=";
  var Value  = null;
  var Begin  = DataSource.indexOf(Prefix);
  if ((Begin != -1) && (Name.length > 0))
  {
    var End = DataSource.indexOf(DataEndChar,Begin);
    if (End == -1) End = DataSource.length;
    Value = DataSource.substring(Begin+Prefix.length,End);
  }
  return Value;
}

function SiDeleteCookie(Name,Path,Domain)
{
	var Expiry = new Date();
	Expiry.setTime(Expiry.getTime() - 1);
	if (!Path) Path = siCookiePath;
	if (!Domain) Domain = SiGetDomain();
	var CookieDetails=Name+"=null"+((Path) ? "; path=" + Path : "")+((Domain) ? "; domain="+Domain : "");
	document.cookie = CookieDetails + "; expires="+Expiry.toGMTString();
}

function SiBuildCookie()
{
   var CookieValue=SiExtractPart(siCookieQPName,document.URL,"&");
   if (CookieValue != null)
   {
      SiSetCookie(siCookieName,CookieValue,siCookieTimeout);
      if (siCentralCookie)
      {
         var extractedURL = SiExtractPart(siCentralRefName,document.URL,"&");
         if (extractedURL != null) {
            siReferrer = unescape(extractedURL);
         }
         extractedURL = SiExtractPart(siCentralReqName,document.URL,"&");
         if (extractedURL != null) {
            siRequest = unescape(extractedURL);
         }
      }
   }
   else
   {
      CookieValue=SiGetCookie(siCookieName);
      if (CookieValue == null)
      {
         CookieValue=SiEncodeDetails("u");
         siIsCookieNew = 'Y';
         SiSetCookie(siCookieName,CookieValue,siCookieTimeout);

         if (siCentralCookie)
         {
            CookieValue = SiGetCookie(siCookieName);
            if (CookieValue != null)
            {
               var centralURL = siCentralURL;
               if (siCentralURL.indexOf("?") == -1)
               {
                  centralURL += "?";
               }
               else
               {
                  centralURL += "&";
               }
               centralURL += siCentralReqName+"="+escape(document.URL)+"&"+siCentralRefName+"="+escape(document.referrer);
               siAutoTracer = false;
               document.location = centralURL;
            }
         }
      }
   }
   CookieValue = SiGetCookie(siCookieName);
   return CookieValue;
}

function SiMigrateCookie(link)
{
   var CookieValue=SiGetCookie(siCookieName);
   if (CookieValue != null) link.href=link.href+((link.href.indexOf('?') > 0) ? "&" : "?")+siCookieQPName+"="+CookieValue;
   return true;
}

function SiMigrateCookieForm(form)
{
   var CookieValue=SiGetCookie(siCookieName);
   if (CookieValue != null)
   {
      if (form.method.toUpperCase() == "GET")
      {
      	try
      	{
	      	try
	      	{
	      		var element = document.createElement('<input name="'+siCookieQPName+'" type="hidden" value="'+CookieValue+'" />');
	      	}
	      	catch (e)
	      	{
	      		var element = document.createElement("input");
				   element.setAttribute("name", siCookieQPName);
				   element.setAttribute("type", "hidden");
				   element.setAttribute("value", CookieValue);
	      	}
	      	form.appendChild(element);
	      }
	      catch (andIgnore) {}
      }
      else
      {
      	form.action=form.action+((form.action.indexOf('?') > 0) ? "&" : "?")+siCookieQPName+"="+CookieValue;
      }
   }
   return true;
}

function SiProcessTracer(cookieForm,noCookieForm,dispatcher)
{
	var tracer;
	if (siCookieValue == null)
	{
		tracer = siTaggingServer + siTrackerUrl + "?f=" + noCookieForm + "&d=" + SiEncodeDetails(noCookieForm);
	}
	else
	{
		tracer = siTaggingServer + siTrackerUrl + "?f=" + cookieForm + "&d=" + SiEncodeDetails(cookieForm);
	}

	siTagType="";
	dispatcher(tracer);
}

function SiSendTracer(cookieForm,noCookieForm)
{
	var sendNow = function(tracer) {
		var Tracker = new Image();
		Tracker.src = tracer;
		siImageSet[siImageSet.length] = Tracker;
	}

   SiProcessTracer(cookieForm,noCookieForm,sendNow);
}

function SiSyncTracer(cookieForm,noCookieForm,action,timeout)
{
   var send = function(tracer) {
      var Tracker = new Image();
      if (action) {
         siSyncFinishedAction = action;
         if (timeout) {
            var timeoutFn = function() {
               if (siSyncFinishedAction) {
                  var exec = siSyncFinishedAction;
                  siSyncFinishedAction = null;
                  exec();
               }
            }
            timeoutFn.toString = function() { return 'var exec = siSyncFinishedAction; siSyncFinishedAction = null; exec();' };
            var runningTimeout = window.setTimeout(timeoutFn, timeout);
         }
      }
      var checkDone = function() {
         if (Tracker.complete && --siSyncTracersOutstanding == 0 && siSyncFinishedAction)
         {
            if (runningTimeout) window.clearTimeout(runningTimeout);
            var exec = siSyncFinishedAction;
            siSyncFinishedAction = null;
            exec();
         }
      };
      try {
      Tracker.addEventListener ?
      Tracker.addEventListener("load", checkDone, false) :
      Tracker.attachEvent("onreadystatechange", checkDone);
      } catch (e){}
      ++siSyncTracersOutstanding;
      Tracker.src = tracer;
      siImageSet[siImageSet.length] = Tracker;
   }
   SiProcessTracer(cookieForm,noCookieForm,send)
}

function SiDeferTracer(cookieForm,noCookieForm)
{
	if (siTracerCookieIdx < 25)
	{
		var defer = function(tracer) {
	      if (siTracerCookieIdx > 0)
	      {
	         if (SiGetCookie(siTracerCookieName + (siTracerCookieIdx - 1)) == null)
	            siTracerCookieIdx = 0;
	      }

			var cookieName = siTracerCookieName + siTracerCookieIdx++;
		   SiSetCookie(cookieName,tracer,1800000);
		}
		SiProcessTracer(cookieForm,noCookieForm,defer);
	}
}

function SiTrackFormData(form,list)
{
	return SiTrackForm(null,form,list);
}

function SiTrackExternalFormData(form,list,closure)
{
	try {
	   siTracerPath = "http://" + document.location.hostname + siBaseDirectory + "/form";
	   siTagType = "extra";
	   if (!closure)
	      closure = function() { form.submit() };
	   var s = function() { SiSyncTracer("fqcty", "fqdty", closure, siTracerTimeout) };
	   SiInternalBuildAndSendFormTracerQuery(form,s,list);
	   return false;
   } catch (e){ return SiInternalError(e);}
}

function SiTrackForm(filePath,form,list)
{
	try {
	   siTracerPath = "http://" + document.location.hostname + (filePath == null ? siBaseDirectory + "/form" : filePath);
	   siTagType = "extra";
	   SiInternalBuildAndSendFormTracerQuery(form,function(){SiDeferTracer("fqcty", "fqdty")},list);
	   return true;
   } catch (e){ return SiInternalError(e);}
}

function SiActiveTrackForm(form, list)
{
	try
	{
	   if (form.elements && (form.elements.length > 0))
	   {
	   	form.siFilledFields=[];
	      for (var i=0; i<form.elements.length; i++)
	      {
	         var el=form.elements[i];
	         if (el.name)
	         {
	            var capture=(list == null);
	            if (list != null)
	            {
	               for (var j=0; !capture && (j<list.length); j++)
	               {
	                  if(el.name==list[j])capture=true;      
	               }
	            }
	            if (capture)
	            {
	               var prev=el.onblur;
	               el.onblur=function(){ if(prev)prev(); SiInternalActiveTrackElement(form, this); }
	            }
	         }
	      }
	   }
	}
	catch (e){SiInternalError(e);}
}

function SiInternalActiveTrackElement(form, el)
{
   if (el.name && ((el.type == "radio" || el.type == "checkbox") ? (el.checked != el.defaultChecked) : (el.value != el.defaultValue)))
   {
   	var list = form.siFilledFields;
   	for (var i=0; i<list.length; i++)
   	{
   		if(el.name==list[i]) return;
   	}
      var attrName = "siform:" + el.name;
      var query = escape(attrName) + "=Y";
      siTracerPath = "http://" + document.location.hostname + siBaseDirectory + "/formfield";
      siTracerQuery = query;
      siTagType = "extra";
      SiSendTracer("fqcty","fqdty");
      list[list.length]=el.name;
   }
}

function SiInternalBuildAndSendFormTracerQuery(form,send,list)
{
   siTracerQuery = "";
   if (form.elements && (form.elements.length > 0))
   {
      var doamp=false;
      for (var i=0; i<form.elements.length; i++)
      {
         var el=form.elements[i];
         if (el.name)
         {
            var capture=(list == null);
            if (list != null)
            {
               for (var j=0; !capture && (j<list.length); j++)
               {
                  if (el.name == list[j]) capture = true;
               }
            }
            if (capture && (el.type == "radio")) capture = el.checked;
            if (el.type == "file") capture = false;
            if (el.type == "submit") capture = (el == form.siActivatedSubmit);
            if (capture)
            {
            	var field = escape(el.name)+"="+((el.type=="checkbox") ? ((el.checked) ? "true" : "false") : escape(el.value));
            	if (siTracerQuery.length+field.length>siFormQueryLimit)
            	{
            		send();
            		siTracerQuery="";
            		doamp=false;
            	}
               if (doamp) siTracerQuery += "&";
               siTracerQuery += field;
               doamp=true;
            }
         }
      }
      send();
   }
}

function SiTrackTracer(filePath,queryString)
{
	try {
      SiInternalTrackTracer(filePath,queryString,null);
   } catch (e){SiInternalError(e);}
}

function SiSendAdditionalTracer(filePath,queryString)
{
	try {
      SiInternalTrackTracer(filePath,queryString,'trace');
	} catch (e){SiInternalError(e);}
}

function SiInternalTrackTracer(filePath,queryString,tagType)
{
   if (filePath.substring(0,1) == '/')
   {
      filePath = document.location.protocol + "//" + document.location.hostname + filePath;
   }
   siTracerPath = filePath;
   siTracerQuery = queryString;
   siTagType = tagType;
   SiSendTracer("fqcty","fqdty");
}

function SiTrackPage(pageID)
{
	try {
	   if (pageID != undefined)
		{
		   if (pageID.indexOf('://') == -1)
		   {
		   	if(pageID.substring(0,1) != '/')
		        	pageID = '/' + pageID;
	
		     	pageID = document.location.protocol + "//" + document.location.hostname + pageID;
		   }
	
		   siRequest = pageID.indexOf('?') == -1 ? pageID + window.location.search : pageID + "&" + window.location.search.substring(1);
		}
		siTagType = "page";
		SiSendTracer("pcrtgy","pdrtgy");
   } catch (e){SiInternalError(e);}
}

function SiRegisterForms()
{
	try {
      var flagSubmitButton = function() { this.form.siActivatedSubmit = this; };
      for (var i = 0; i < document.forms.length; i++) {
         var form = document.forms[i];
         for (var j = 0; j < form.elements.length; j++) {
            if (form.elements[j].type == "submit") {
               var el = form.elements[j];
               var prev = el.onclick;
               if (prev) {
                  (function() {
                     var fn = prev;
                     el.onclick = function() { this.form.siActivatedSubmit = this; fn(); }  
                  })();
               } else {
                  el.onclick = flagSubmitButton;
               }
            }
         }
      }
	} catch (e){SiInternalError(e);}
}

function SiInitPage()
{
	try {
		if (siTaggingServer == null)
		{
			siTaggingServer = document.location.protocol + "//" + document.location.hostname + ":" + document.location.port;
		}
		else if (siTaggingServer.substring(0,4) != "http")
		{
			siTaggingServer = document.location.protocol + "//" + siTaggingServer + ":" + document.location.port;
		}
		siCookieValue = SiBuildCookie();
		SiSendDeferredTracers();
	} catch (e){SiInternalError(e);}
}

function SiSendDeferredTracers()
{
	var i = 0;
	var cookieName = siTracerCookieName + i++;
	var tracer = SiGetCookie(cookieName);
	while (tracer)
	{
		var Tracker = new Image();
   	Tracker.src = tracer;
      siImageSet[siImageSet.length] = Tracker;

      SiDeleteCookie(cookieName);

      cookieName = siTracerCookieName + i++;
      tracer = SiGetCookie(cookieName);
	}
}

function SiNewPageContext()
{
	siExtClickID="t"+(new Date()).getTime()+"h"+window.history.length;
}

function SiInternalError(e)
{
	return true;
}

SiInitPage();

if (window.siAutoTracer)
{
   SiTrackPage();
}