var GimgCornerPlus = new Image;
GimgCornerPlus.src = '/images/menu/cornerplus.gif';
var GimgCornerMinus = new Image;
GimgCornerMinus.src = '/images/menu/cornerminus.gif';
var canSwitch = false;

if (parseInt(navigator.appVersion) >= 5 || navigator.appVersion.indexOf["MSIE 5"] != -1)
    canSwitch = true;

function switchOn(treeName, levelID, isLast){
if(canSwitch){
  var img1;
  if (treeName!=''){
     img1 =document.getElementById(treeName+'pm'+levelID);
  }else{
     img1 =document.getElementById('pm'+levelID);
  }
  var imgMinusLast = 'cornerminus.gif';
  var imgMinus = 'lineminus.gif';
  if (isLast) imgMinus = imgMinusLast;
  var newImage = '/images/menu/'+imgMinus;
  if (img1)
     img1.src = newImage;
  var subitems;
  if (treeName != '') {
      subitems = document.getElementById(treeName+'L'+levelID);
  }else{
      subitems = document.getElementById('L'+levelID);
  }
  if(subitems && subitems.style)
     subitems.style.display = 'block';
};
};

function switchOff(treeName, levelID, isLast){
if(canSwitch){
  var img1;
  if (treeName!=''){
     img1 =document.getElementById(treeName+'pm'+levelID);
  }else{
     img1 =document.getElementById('pm'+levelID);
  }
  var imgPlusLast = 'cornerplus.gif';
  var imgPlus = 'lineplus.gif';
  if (isLast) imgPlus = imgPlusLast;
  var newImage = '/images/menu/'+imgPlus;
  if (img1)
     img1.src = newImage;
  var subitems;
  if (treeName != '') {
      subitems = document.getElementById(treeName+'L'+levelID);
  }else{
      subitems = document.getElementById('L'+levelID);
  }
  if(subitems && subitems.style)
     subitems.style.display = 'none';
};
};

function switchOnOffie(treeName, image1, levelID, isLast){
if(canSwitch){
  var subitems ;
  var imgRoot ;
  if (treeName != ''){
     subitems = document.getElementById(treeName+'L'+levelID);
     imgRoot  = document.getElementById(treeName+'pmRoot');
  }else{
     subitems = document.getElementById('L'+levelID);
     imgRoot  = document.getElementById('pmRoot');
  }
  var clName=subitems.className;
  newName=clName.substring(0, clName.length-1);
  var visible= (subitems.style.display!='none');
  var imgPlusLast = 'cornerplus.gif';
  var imgPlus = 'lineplus.gif';
  if (isLast) imgPlus = imgPlusLast;
  var imgMinusLast = 'cornerminus.gif';
  var imgMinus = 'lineminus.gif';
  if (isLast) imgPlus = imgMinusLast;
  var isFirst = image1==imgRoot;
  if (isLast) {
     imgPlus = imgPlusLast;
     imgMinus = imgMinusLast;
  }
  if (isFirst && ! isLast) {
     imgPlus = 'plus.gif';
     imgMinus = 'minus.gif';
  }
  if(visible){
      clName = newName+'u';
      newImage = '/images/menu/'+imgPlus;
      subitems.style.display='none';
  }else{
      clName = newName+'v';
      newImage = '/images/menu/'+imgMinus;
      subitems.style.display='block';
  }

  image1.src = newImage;
};

};