$(document).ready(function() { window.onload = function passvalid(){ document.getElementById("ContentContainer_MainContent_MainContent_UserNameTextBox").required = true; document.getElementById("ContentContainer_MainContent_MainContent_PasswordTextBox").required = true; document.getElementById("ContentContainer_MainContent_MainContent_PasswordTextBox").pattern = "(?=.*[!#$%&'()*+,-./:;<=>?@\^_`{|}~])(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]).{8,}"; document.getElementById("ContentContainer_MainContent_MainContent_PasswordTextBox").title = "Must be at least 8 characters in length and contain at least one number, uppercase letter, lowercase letter, and a special character special character (e.g. !#$%&'()*+,-./:;<=>?@\^_`{|}~)."; }; $("#SubmitButton").click(function () { document.getElementsByClassName("blockUI")[0].remove(); }); });