asp.net ajaxtoolkit modalpopupextender open server side and cleint Side

Following code will help for how to open ajaxtoolkit modalpopupextender

how it can open via server side code (c#) or cleient Side code

javascript
==========
var launch = false;
function launchModal() {
launch = true;
}

function pageLoad() {
if (launch) {
$find("modalpopupextender client id need to pass here").show();
}
}

Client Side
============

OnClientClick="launchModal()"

serverside:=
============

Following code need to write in any button control click event

ClientScript.RegisterStartupScript(this.GetType(), "key", "launchModal();", true);

Using Javascript Read /Write Cookies

Following Code Will help For Reading And Writing cookie

sample code
============


How To Create
createCookie("slidingpane", "dock", 1);
How To Read
var pane = readCookie("slidingpane")



Ref Function

function createCookie(name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
}
else var expires = "";
document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') c = c.substring(1, c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
}
return null;
}

function eraseCookie(name) {
createCookie(name, "", -1);
}