// JavaScript Document
function toggle() {
	var ele = document.getElementById("toggleText");
	var text = document.getElementById("displayText","displayText2");
	if(ele.style.display == "block") {
    		ele.style.display = "none";		
  	}
	else {
		ele.style.display = "block";		
	}
} 

function validate()
{
	if((document.contact.name.value=="")||(document.contact.name.value==null))
	{
		alert("Please enter a name");
		document.contact.name.focus();
		return false;
	}
	var emailID=document.contact.Email;
	
	if ((emailID.value==null)||(emailID.value==""))
		{
		alert("Please enter an email address");
		emailID.focus();
		return false;
		}
	if (echeck(emailID.value)==false)
		{
		document.contact.Email.value="";
		document.contact.Email.focus();
		return false
		}
	if((document.contact.message.value=="")||(document.contact.message.value==null))
	{
		alert("Please enter a message to be sent");
		document.contact.message.focus();
		return false;
	}
	return true;
}



function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Please enter a valid email address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid email address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid email address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid email address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid email address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid email address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid email address")
		    return false
		 }

 		 return true					
	}