window.onload = function allocateSidebarHeight() {
var contentDom = document.getElementById("left");
var sidebarDom = document.getElementById("right");
if((contentDom.offsetHeight) > sidebarDom.offsetHeight) {
sidebarDom.style.height = (contentDom.offsetHeight)+"px"; }
else {contentDom.style.height = (sidebarDom.offsetHeight)+"px"; }
}