Why doesn't addTextObject() with a jQuery variable work?

Question

When developing a Windows Vista/7 Gadget, and putting out text using addTextObject(), this works:

var mytext = "Hello";
document.getElementById("background").addTextObject(mytext , "Verdana", 11, "white", 10, 10);

But I cant get this jQuery selector into a variable to work:

var mytext = $("#myid").text();
document.getElementById("background").addTextObject(mytext , "Verdana", 11, "white", 10, 10);

It doesn't work, it only writes an empty string. Why?

Answer 1

I found out why. The content in my div was added dynamically using jQuery.

<div id="myid"></div>

$("#myid").append("somedata"); 
var mytext = $("#myid").text();
System.Debug.outputString(mytext); // Empty

For some reason, this doesn't work in the Gadget. It does work in a plain HTML file though...

Static content do work in the Gadget:

<div id="myid">somedata</div>

var mytext = $("#myid").text();
System.Debug.outputString(mytext); // Ok

Can anyone explain how I can query dynamically added content in a Sidebar? UPDATE: This solved my problem.