function fixColumns(){
		var h1 = document.getElementById("content").offsetHeight;
		var h2 = document.getElementById("menu").offsetHeight;
		var max = h1;
		if(h2 > max) max = h2;
			if (max<500) max=500;
			document.getElementById("content").style.height = max + "px";
			document.getElementById("menu").style.height = max + "px";
	}