var ElementID = '';
var pageForm = getFormObject();

function Get_Cookie(name) {
    var start = document.cookie.indexOf(name+"=");
    var len = start+name.length+1;
    if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
    if (start == -1) return null;
    var end = document.cookie.indexOf(";",len);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(len,end));
}

function Delete_Cookie( name, path, domain ) {
	domain = 'webex.com';
	path = '/';
	if ( Get_Cookie( name ) ) document.cookie = name + "=" +
	( ( path ) ? ";path=" + path : "") +
	( ( domain ) ? ";domain=" + domain : "" ) +
	";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function fieldExists(fieldName) {
	if(pageForm){
    	for(var i=0; i < pageForm.length; i++){
    		if(pageForm.elements[i].name == fieldName){
    			ElementID = i;
    			return true;
    		}
    	}
    }
	return false;
}

function addField(fieldName, fieldValue){
	if(pageForm){
    	if(fieldExists(fieldName)){
    		pageForm.elements[ElementID].value = fieldValue;
    	}
    	else{
        	var field = document.createElement('input');
        	field.type = 'hidden';
        	field.name = fieldName;
        	field.value = fieldValue;
        	pageForm.appendChild(field);
        }
    }
}

function getFormObject(){
	for(var i=0; i < document.forms.length; i++){
		var fname = document.forms[i].name
		var fid = document.forms[i].id
		if(fname == '_mktf' || fname == '_mktf1' || fname == '_mktf2' || fname == '_mktf3' || fname == '_mktf4' || fname == '_mktf5' 
			|| fname == '_mktf6' || fname == '_mktf7' || fname == '_mktf8' || fname == '_mktf9' || fname == 'signUpStep1Form' 
			|| fname == 'signUpStep2Form' || fname == 'form1' || fname == 'authenticationForm' || fname == 'ppu_signup' 
			|| fname == 'SEEMA' || fname == 'step2' || fid == 'portlet_signupControllersignUpForm'){
			return document.forms[i];
		}
	}
	return false;
}

if(pageForm){
    if(pageForm.Thanks && (pageForm.Thanks.value=="DEL")){
    	Delete_Cookie("WebExMTID");
    }
	
	addField('TrackID',"1012230");
	addField('TrackID2',"1012230=2008-04-26 22:45:18.001|");
    addField('OrigTrackID',"1012230");
    addField('Submission_URL',document.URL.substring(0,249));
    addField('Visitor_ID',"496615998");
    addField('Referring_URL',"http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-6274600623373404&dt=1209249799040&lmt=1209249786&output=html&slotname=9897995603&correlator=1209249799025&url=http%3A%2F%2Fwww.metanotes.com%2F&ref=http%3A%2F%2Fwww.metanotes.com%2Fsonicsr");
    addField('semid',"");
}