function fixColumns(){
		var h1 = document.getElementById("textmain").offsetHeight;
		var h2 = document.getElementById("leftmargin").offsetHeight;
		var max = h1;
		if(h2 > max) max = h2;
		document.getElementById("textmain").style.height = max + "px";
		document.getElementById("leftmargin").style.height = max + "px";
}	
	
onload=fixColumns;