function show_qa(id) {
  if(document.getElementById(id).style.display=='') {
    document.getElementById(id).style.display = 'none';
  } else {
    document.getElementById(id).style.display = '';
  }
}

function copy_clip(maintext){
  maintext = String(maintext)
  if (window.clipboardData){
    window.clipboardData.setData("Text", maintext);
  }else{
    try{
      netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
      var gClipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].
      getService(Components.interfaces.nsIClipboardHelper);
      gClipboardHelper.copyString(maintext);
    }catch(err){
      openCodeTextWindow();
    }
  }
  return false;
}