xAddEventListener(window, "resize", repositionContent, true);
xAddEventListener(window, "load", repositionContent, true);

function repositionContent() { // Here we find the user's inner area in order to help us with positioning!
  xGetElementById('content').style.overflow = 'auto';
  var subtract = (navigator.appName == 'Microsoft Internet Explorer')? 145 : 150;
  xGetElementById('content').style.height = xClientHeight() - subtract +'px';
}