function closeWindow() {
  if (opener) window.close();
  else window.history.go(-1);
}

function openWindow (url,name,width,height,adds) {  
  if (!width) width=500;
  if (!height) height=500;
  var params="width="+width+",height="+height+","+
       ((adds&&adds.indexOf("toolbar")!=-1)?"":"toolbar=no,")+
       ((adds&&adds.indexOf("menubar")!=-1)?"":"menubar=no,")+
       ((adds&&adds.indexOf("scrollbars")!=-1)?"":"scrollbars=yes,")+
       ((adds&&adds.indexOf("status")!=-1)?"":"status=yes,")+
       ((adds&&adds.indexOf("location")!=-1)?"":"location=no,")+
       adds;
  someWindow=window.open(url,name,params);
  someWindow.focus();
}

function setActionAndSubmit (form) {
  var menu_options=form.elements['Action'].options;
  form.action=menu_options[menu_options.selectedIndex].value;
  form.submit();
}