多选的移动函数

function MoveSelectedItem(source, dest)
{
  sel_source=$(source);
  sel_dest=$(dest);
  if (sel_source.selectedIndex==-1) return;

  for(var j=0; j
  {
  if(sel_source.options[j].selected)
  {
  var SelectedText = sel_source.options[j].text;
  var SelectedCode = sel_source.options[j].value
  sel_dest.options.add(new Option(SelectedText,SelectedCode));
  sel_dest.options[sel_dest.length-1].selected = true;
  //sel_source.options.remove(j);此种方法IE支持，FF不支持，下面这个IE,FF都支持
  sel_source.remove(j);
  j--;
  }
  }
}