function isBlank(id,msg)
{
	
	var val = null;
	try{val = document.getElementById(id).value;}catch(e){val= null;}
	
	if(val==null)
	{
	 	alert("Please enter " + msg);	return false;
	}
	else if(val == "")
	{
		 	alert("Please enter " + msg);	return false;
	}
	else
	{
		return true;
	}
}

function validate(id) {
	
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.getElementById(id).value;
   if(reg.test(address) == false) {
      alert('Invalid Email Address');
      return false;
   }
   else
   {
	   return true;
   }
}