function emailCheck1 (emailStr) {

if (document.getElementById('val_1').value == "")
{
document.getElementById('divError').innerHTML = "Please enter your name"; 
document.getElementById('divError').style.display =  'block';   
return false;  
} 

if (emailStr == "")
{
document.getElementById('divError').innerHTML = "Please enter email address "; 
document.getElementById('divError').style.display =  'block';   
return false;
} 


	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);
	if (matchArray==null) {
	
	document.getElementById('divError').innerHTML = "Your email address seems incorrect (check @)"; 
 	document.getElementById('divError').style.display =  'block';   
//		alert("Your email address seems incorrect (check @ and .'s)");
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	if (user.match(userPat)==null) {
	document.getElementById('divError').innerHTML = "The username doesn't seem to be valid."; 
	
	document.getElementById('divError').style.display =  'block';  
	 //   alert("The username doesn't seem to be valid.");
	    return false;
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
		    
	document.getElementById('divError').innerHTML = "Destination IP address is invalid!"; 
 
	document.getElementById('divError').style.display =  'block';  
	
		       // alert("Destination IP address is invalid!");
			return false;
		    }
	    }
	    return true;
	}
//	var domainArray=domain.match(domainPat);
//	if (domainArray==null) {
//	    document.getElementById('divError').innerHTML = "The domain name doesn't seem to be valid."; 
//	 
//	document.getElementById('divError').style.display =  'block';  
//	//	alert("The domain name doesn't seem to be valid.");
//	    return false;
//	}
	var atomPat=new RegExp(atom,"g");
	var domArr=domain.match(atomPat);
	var len=domArr.length;
	if ((domArr[domArr.length-1] != "info") &&
		(domArr[domArr.length-1] != "name") &&
		(domArr[domArr.length-1] != "arpa") &&
		(domArr[domArr.length-1] != "coop") &&
		(domArr[domArr.length-1] != "aero")) {
			if (domArr[domArr.length-1].length<2 ||
		    	domArr[domArr.length-1].length>3) {
		    	 document.getElementById('divError').innerHTML = "Must end in a three-letter domain, or two letter country."; 
	            document.getElementById('divError').style.display =  'block'; 
	
	
			   		//alert("The address must end in a three-letter domain, or two letter country.");
			   		return false;
			}
	}
	if (len<2) {
	
	 document.getElementById('divError').innerHTML = "This address is missing a hostname!"; 
	document.getElementById('divError').style.display =  'block'; 
	//   var errStr="This address is missing a hostname!";
	  
	   return false;
	}
	return true;
}


function UPTvalidateform(thisform) 
{
if (emailCheck1(thisform.email.value))
	{	
        if (document.getElementById('unsubscribe') 
            && !document.getElementById('unsubscribe').checked) 
            {
        }
		return false;
	}
	

		return true;
		
}