password.js

function checkPasswordMatch() {
    var password = $("#password").val();
    var confirmPassword = $("#confirmpassword").val();

    if (password != confirmPassword)
        $("#divCheckPasswordMatch").html("Passwords do not match!");
    else
        $("#divCheckPasswordMatch").html("Passwords match.");
    }

    jQuery(document).ready(function () {
        $("#password, #confirmpassword").keyup(checkPasswordMatch);
    });