function compareDigits(a,b){
	return a - b;
}

function calcHeights(wrapper){
	var element = document.getElementById(wrapper);
	var arrHeights = new Array();
	// read all children div heights into an array
	for(i = 0 ; i < element.getElementsByTagName("div").length ; i++){
		arrHeights[i] = element.getElementsByTagName("div")[i].offsetHeight;
	}
	// sort tallest div to first array position
	arrHeights.sort(compareDigits);
	arrHeights.reverse();
	// set wrapper div = tallest child div
	element.style.height= arrHeights[0] + "px";
	window.setTimeout('calcHeights("' + wrapper + '")', 10);
}

window.onload = function(){
	calcHeights("content");
}