function loadPageSize(){
 var contentHeight = document.getElementById('content');
 var centerHeight = document.getElementById('center');
 if(contentHeight.offsetHeight > centerHeight.offsetHeight){
  var main = document.getElementById('main');
  var left = document.getElementById('left');
  var right = document.getElementById('right');
  var diff = contentHeight.offsetHeight - centerHeight.offsetHeight;
  var offset = 150;
  main.style.height = (main.offsetHeight + diff + offset - 2) + 'px';
  left.style.height = (left.offsetHeight + diff + offset) + 'px';
  centerHeight.style.height = (centerHeight.offsetHeight + diff + offset) + 'px';
  right.style.height = (right.offsetHeight + diff + offset) + 'px';
 }
 return true;
}