/*
 * trim a string in javascript
 */
function Trim(s) 
{
   // Remove leading spaces and carriage returns
   while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r')){
     s = s.substring(1,s.length);
   }

   // Remove trailing spaces and carriage returns
   while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r')) {
     s = s.substring(0,s.length-1);
   }
   return s;
}

/*
 * Email address format validation
 */
function isValidEmail(email){
	var emailregex = /^[\w\_\-\.]+@[\w\_\-\.]+\.\w+$/;
	return email.match(emailregex);
}