// HpbImgPreload:
//
function HpbImgPreload()
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=(document.layers && (appVer >= 4));
  var isIE=(document.all    && (appVer >= 4));
  if (isNC || isIE)
  {
    if (document.images)
    {
      var imgName = HpbImgPreload.arguments[0];
      var cnt;
      swImg[imgName] = new Array;
      for (cnt = 1; cnt < HpbImgPreload.arguments.length; cnt++)
      {
        swImg[imgName][HpbImgPreload.arguments[cnt]] = new Image();
        swImg[imgName][HpbImgPreload.arguments[cnt]].src = HpbImgPreload.arguments[cnt];
      }
    }
  }
}


// HpbImgFind:
//
function HpbImgFind(doc, imgName)
{
  for (var i=0; i < doc.layers.length; i++)
  {
    var img = doc.layers[i].document.images[imgName];
    if (!img) img = HpbImgFind(doc.layers[i], imgName);
    if (img) return img;
  }
  return null;
}


// HpbImgSwap:
//
function HpbImgSwap(imgName, imgSrc)
{
  var appVer=parseInt(navigator.appVersion);
  var isNC=(document.layers && (appVer >= 4));
  var isIE=(document.all    && (appVer >= 4));
  if (isNC || isIE)
  {
    if (document.images)
    {
      var img = document.images[imgName];
      if (!img) img = HpbImgFind(document, imgName);
      if (img) img.src = imgSrc;
    }
  }
}

var swImg; swImg=new Array;



chkMoss  = (navigator.appName == 'Netscape');
Moss6  = (parseFloat(navigator.appVersion) >= 5.0);


function showl(lname){
  if(chkMoss && Moss6)document.getElementById(lname).style.visibility='visible';
  if(document.layers)document.layers[lname].visibility='show';
  if(document.all)document.all(lname).style.visibility='visible';
}

function hidel(lname){
  if(chkMoss && Moss6)document.getElementById(lname).style.visibility='hidden';
  if(document.layers)document.layers[lname].visibility='hide';
  if(document.all)document.all(lname).style.visibility='hidden';
}

function hideall(){ 
hidel('menu3');hidel('menu5')}