$(document).ready(function() {
    // Initialize validation on the entire ASP.NET form.
$("#signup").validate({
        // This prevents validation from running on every
//  form submission by default.
     
		

        onsubmit: false
    });

    // Search for controls marked with the causesValidation flag 
    //  that are contained anywhere within elements marked as 
    //  validationGroups, and wire their click event up.
    $('.validationGroup .causesValidation').click(Validate);

    // Select any input[type=text] elements within a validation group
    //  and attach keydown handlers to all of them.
    $('.validationGroup :text').keydown(function(evt) {
        // Only execute validation if the key pressed was enter.
        if (evt.keyCode == 13) {
            // Find and store the next input element that comes after the
            //  one in which the enter key was pressed.
            var $nextInput = $(this).nextAll(':input:first');

            // If the next input is a submit button, go into validation.
            //  Else, focus the next form element as if enter == tab.
            if ($nextInput.is(':submit')) {
                Validate(evt);
            }
            else {
                evt.preventDefault();
                $nextInput.focus();
            }
        }
    });
});

function Validate(evt) {
    // Ascend from the button or input element that triggered the 
    //  event until we find a container element flagged with 
    //  .validationGroup and store a reference to that element.
    var $group = $(this).parents('.validationGroup');

    var isValid = true;

    // Descending from that .validationGroup element, find any input
    //  elements within it, iterate over them, and run validation on 
    //  each of them.
    $group.find(':input').each(function(i, item) {
        if (!$(item).valid())
            isValid = false;
    });

    // If any fields failed validation, prevent the button's click 
    //  event from triggering form submission.
    if (!isValid)
        evt.preventDefault();
}