function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
	
}
function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return true;		
	}
	return false;
}
function checkCondition()
{
	if (readCookie("KnowledgePlatform"))
	{
		document.getElementById("whitepaperspan").style.display="";
		document.getElementById("demospan_form3").style.display="none";		
	}
	else
	{		
		document.getElementById("whitepaperspan").style.display="none";
		document.getElementById("demospan_form3").style.display="";
		
	}
	
}
function trim (str) {
	  while (str.charAt(0) == ' ')
		str = str.substring(1);
	  while (str.charAt(str.length - 1) == ' ')
		str = str.substring(0, str.length - 1);
	  return str;	
}
function validate(){

	if(trim(document.presentationForm.first_name.value) == ""){
		document.presentationForm.first_name.value = ""
		alert("Please enter your First Name")
		document.presentationForm.first_name.focus();
		return false;
		}else if(trim(document.presentationForm.last_name.value) == ""){	
			document.presentationForm.last_name.value = ""
			alert("Please enter your Last Name")
		document.presentationForm.last_name.focus()
		return false;
			}else if(document.presentationForm.email.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1){
			alert("Please enter your Valid Email address")
		document.presentationForm.email.focus()
		return false;
			}else if(trim(document.presentationForm.company.value) == ""){
				document.presentationForm.company.value = ""
			alert("Please enter your Company Name")
		document.presentationForm.company.focus()
		return false;
		}else if(document.presentationForm.lead_source.value == ""){
			alert("Please Provide the lead from where you have heard about Knowledge Platform")
		document.presentationForm.lead_source.focus()
		return false;
	}else{
		openWin();
		redirectPage();
		//return true;
	}
}