function validateEmail(obj){
	email = obj.value;
	if (email=="") {alert ("Please enter email"); obj.focus(); return false;} 

  re = /^[\w-\.]+@([\w-]+\.)+([a-z]{2,4})$/i ;
	trim_email = email.replace(/(^\s*)|(\s*$)/g, "");
	
  if(!re.test(trim_email)) {
    alert("Invalid E-mail. Please re-enter");
		obj.focus();
    return false;
  }
  return true;
}

function ValidateURL(url){
	if (url=="") return true;
	re = /^http:\/\/[\S]+$/i ;
	if(re.test(url)) return true;	 
		else {alert("Invalid URL. Please re-enter");  return false;	}
}