function isEmailAddress(s)
{
	//var s = theElement.value;
	//alert(s);
	var filter=/^[A-Za-z0-9_\.\-]*@[A-Za-z0-9_]+\.[A-Za-z0-9_.]+[A-za-z]$/;
	
	if (s.length == 0 ) return 
	    true;
	
	if (filter.test(s))
		return true;
	else
	    return false;
	}