adjustColumnHeight = function allocateSidebarHeight() {
            var leftDom = document.getElementById("col_left");
            var rightDom = document.getElementById("col_right");
            var newHeight;
			if (leftDom && rightDom){
				var hl = leftDom.offsetHeight;
				var hr = rightDom.offsetHeight;
				if (hl >= hr) {
					newHeight = hl;
				} else {
					newHeight = hr;
				}
	
				leftDom.style.height = (newHeight+20) + "px";
				rightDom.style.height = (newHeight-20) + "px";
			}
			//fix bottom margin to make room for footer
            var footerDom = document.getElementById("footer");
            var wrapperDom = document.getElementById("wrapper");
			if (footerDom && wrapperDom){
				wrapperDom.style.marginBottom=(footerDom.offsetHeight+1) + "px";
			}
			
		}
        window.onload = adjustColumnHeight;