function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
  oldonload();
      }
      func();
    }
  }
}

function selectScroll(id) {
  return function() {
    oSelect = document.getElementById(id);
    selectedIndex = oSelect.selectedIndex
    if (selectedIndex != -1) {
      oSelect.item(selectedIndex).selected = false;
      oSelect.item(selectedIndex).selected = true;
    }
  }
}