Jquery Validation插件如何防止重复提交表单

function disableBtn(btnID, newText) {
Page_IsValid = null;

if (typeof (Page_ClientValidate) == 'function') {
Page_ClientValidate();
}

var btn = document.getElementById(btnID);
var isValidationOk = Page_IsValid;

if (isValidationOk !== null) {

if (isValidationOk) {
btn.disabled = true;
btn.value = newText;
btn.style.background = "url(12501270608.gif)";

}
else {
btn.disabled = false;
}
}
else {
setTimeout("setImage('"+btnID+"')", 10);
btn.disabled = true;
btn.value = newText;
}
}

function setImage(btnID) {
var btn = document.getElementById(btnID);
btn.style.background = 'url(12501270608.gif)';
}

<asp:button id="btnOne" tabIndex="0" Runat="server" Text="Submit" onclick="btnOne_Click" OnClientClick="disableBtn(this.id, 'Submitting...')"
UseSubmitBehavior="false" />

$(document).ready(function() {
$("#myForm").validate({
submitHandler: function(form) {
$(form).find(":submit").attr("disabled", true).attr("value",
"Submitting...");
form.submit();
}
})
});