function Validate(){this.email=function(email){var emailRegex=/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;return email.match(emailRegex);};this.isEmpty=function(string){if(string.length==0)return true;return false;}}