function AdjustColumnsHeight() 
{ 
var mainCol = window.document.getElementById('content'); 
var rightCol = window.document.getElementById('sidebar'); 
var hMainCol = mainCol .offsetHeight; 
var hrightCol = rightCol.offsetHeight; 
var maxHeight = Math.max( hMainCol , hrightCol); 
mainCol.style.height = maxHeight + 'px'; 
rightCol.style.height = maxHeight + 'px'; 
}
if (document.all){
window.attachEvent('onload',AdjustColumnsHeight)
}
else{
window.addEventListener('load',AdjustColumnsHeight,false);
}