A couple of very simple yet handy routines for validation of form fields: Function to validate an email address (see original post): function ValidateEmail(email){ var emailReg = “^[\\w-_\.]*[\\w-_\.]\@[\\w]\.+[\\w]+[\\w]$”; var regex = new RegExp(emailReg); return regex.test(email); } Function to validate a number: function ValidateNumber(num) { return num.match(/^\d+$/); } Input mask for a field to only accept [...]