var _offset = 47;

function fixLayout() {
	var _content = document.getElementById("content");
	var _sidebar = document.getElementById("sidebar");
	if (_content && _sidebar) {
		if (_sidebar.offsetHeight < _content.offsetHeight) {
			_sidebar.style.height = _content.offsetHeight - _offset + "px";
		}
	}
}

if (window.addEventListener){
	window.addEventListener("load", fixLayout, false);
	
}
else if (window.attachEvent){
	window.attachEvent("onload", fixLayout);
}