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Resizing panels dynamically

Posted By:      Posted Date: October 08, 2010    Points: 0   Category :ASP.Net


I have an asp.net page with two panels, and I'm adding controls to the panels dynamically. I create at table programatically and add it to one panel - the table content comes from a database and the table (and panel) resize accordingly. My problem is that I want the second panel to be the same size as the main panel. I've tried Panel.Height but as I haven't set a height for the panel this is returning 0. I've tried a javascript workaround but I can't get it to work

<script type="text/javascript">
    window.onload = setLongest;
function getLongest_1() {
colLength = new Array(1);
colLength[1] = document.getElementById("ctl00_ContentPlaceHolder1_MainPanel").offsetHeight;
colLength[2] = document.getElementById("ctl00_ContentPlaceHolder1_RightPanel").offsetHeight;
return colLength[0];

function setLongest() {
divLen = getLongest_1();
//document.getElementById("ctl00_ContentPlaceHolder1_MainPanel").style.height = divLen;
//document.getElementById("ctl00_ContentPlaceHolder1_RightPanel").height = divLen;
As you can see I've commented out the lines that assign the values to the panels and tried 

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