String.prototype.trim = function () {
	return this.replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1");
};

function validEmail(email) 
{ 
	if (email.trim() == '')
	{
		return false;
	}	

	var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/ 
	return email.match(re) 
}