// JavaScript Document
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 id");
		   document.frmSubscribe.email_subscribe.focus();
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid email id");
		   document.frmSubscribe.email_subscribe.focus();
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid email id");
			document.frmSubscribe.email_subscribe.focus();
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid email id");
			document.frmSubscribe.email_subscribe.focus();
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid email id");
			document.frmSubscribe.email_subscribe.focus();
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid email id");
			document.frmSubscribe.email_subscribe.focus();
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid email id");
			document.frmSubscribe.email_subscribe.focus();
		    return false
		 }
 		 return true					
}

function SubscribeValidate()
{
	if(document.frmSubscribe.email_subscribe.value.length==0)
	{
		alert("Please enter your email id, if you wish to receive newsletters.");
		document.frmSubscribe.email_subscribe.focus();
		return false;
	}	
	else if (echeck(document.frmSubscribe.email_subscribe.value)==false)
	{						
		return false;
	}	
	return true;
}