window.onload = function() {
	var sidebar_h = document.getElementById("sidebar");
	var content_h = document.getElementById("content");
	var fix = 0;
	if  (sidebar_h.offsetHeight > content_h.offsetHeight) {
		var fix = 20;
		content_h.style.height = sidebar_h.offsetHeight-fix+"px";
	}
	else
		sidebar_h.style.height = content_h.offsetHeight-fix+"px";
}