function open_window(name, url, left, top, width, height, scrollbar, resizable)
{
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
  window.open(url, name, 'left='+left+',top='+top+', width='+width+',height='+height+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}