// by Paul@YellowPencil.com and Scott@YellowPencil.com
function setTall() {
if (document.getElementById) {
var divs = new Array(document.getElementById('content_left'), document.getElementById('content_right'));
var maxHeight = 600;
for (var i = 0; i < divs.length; i++) {
if (divs[i].offsetHeight > maxHeight) maxHeight = divs[i].offsetHeight;
}
for (var i = 0; i < divs.length; i++) {
divs[i].style.height = maxHeight + 'px';
if (divs[i].offsetHeight > maxHeight) {
divs[i].style.height = (maxHeight - (divs[i].offsetHeight - maxHeight)) + 'px';
   }
  }
 }
}

window.onload = function() {
setTall();
}

window.onresize = function() {
setTall();
}