function RenderPopup(windowsource, windowname, width, 
  height, scrollbars, directories, location,
  menubar, status, toolbar, resizable)
{
   var windowfeatures = 'width=' + width +
   ',height=' + height + ',directories=' + directories +
   ',location=' + location + ',menubar=' + menubar +
   ',scrollbars=' + scrollbars + ',status=' + status +
   ',toolbar=' + toolbar + ',resizable=' + resizable;
   window.open(windowsource, windowname, windowfeatures);
}