<!--


function cacheImgs(name)
{
var arRef = window[name+'Ar'];
  for(var c = 1;c <= arRef.length;c++)
  {
    window[name+c] = new Image();
    window[name+c].src = arRef[(c-1)];
  }
}

if (document.images) 
{

                shopon=new Image(52,25);
                shopon.src="../mast/shop_on.gif";
                learnon=new Image(58,25);
                learnon.src="../mast/learn_on.gif";
                communityon=new Image(100,23);
                communityon.src="../mast/community_on.gif";
                personalson=new Image(84,23);
                personalson.src="../mast/personals_on.gif";

                shopoff=new Image(52,25);
                shopoff.src="../mast/shop_off.gif";
                learnoff=new Image(58,25);
                learnoff.src="../mast/learn_off.gif";
                communityoff=new Image(100,23);
                communityoff.src="../mast/community_off.gif";
                personalsoff=new Image(84,23);
                personalsoff.src="../mast/personals_off.gif";

shopadAr = ["../mast/shop_slice1.gif","../mast/slice2_off.gif","../mast/slice3_off.gif","../mast/shop_slice4.gif","../mast/shop_slice5.gif","../mast/slice6_off.gif","../mast/slice7_off.gif","../mast/shop_slice8.gif","../mast/shop_slice9.gif","../mast/slice10_off.gif","../mast/slice11_off.gif","../mast/slice12_off.gif","../mast/shop_slice13.gif","../mast/shop_slice14.gif","../mast/slice15_off.gif","../mast/slice16_off.gif"];

learnadAr = ["../mast/slice1_off.gif","../mast/slice2_off.gif","../mast/learn_slice3.gif","../mast/slice4_off.gif","../mast/learn_slice5.gif","../mast/learn_slice6.gif","../mast/slice7_off.gif","../mast/slice8_off.gif","../mast/learn_slice9.gif","../mast/learn_slice10.gif","../mast/slice11_off.gif","../mast/slice12_off.gif","../mast/slice13_off.gif","../mast/learn_slice14.gif","../mast/learn_slice15.gif","../mast/slice16_off.gif"];

personalsadAr = ["../mast/slice1_off.gif","../mast/slice2_off.gif","../mast/slice3_off.gif","../mast/slice4_off.gif","../mast/slice5_off.gif","../mast/slice6_off.gif","../mast/personals_slice7.gif","../mast/personals_slice8.gif","../mast/slice9_off.gif","../mast/slice10_off.gif","../mast/slice11_off.gif","../mast/personals_slice12.gif","../mast/personals_slice13.gif","../mast/slice14_off.gif","../mast/slice15_off.gif","../mast/slice16_off.gif"];

communityadAr = ["../mast/slice1_off.gif","../mast/slice2_off.gif","../mast/slice3_off.gif","../mast/slice4_off.gif","../mast/slice5_off.gif","../mast/slice6_off.gif","../mast/slice7_off.gif","../mast/slice8_off.gif","../mast/slice9_off.gif","../mast/community_slice10.gif","../mast/community_slice11.gif","../mast/slice12_off.gif","../mast/slice13_off.gif","../mast/slice14_off.gif","../mast/community_slice15.gif","../mast/community_slice16.gif"];

cacheImgs('shopad');
cacheImgs('learnad');
cacheImgs('personalsad');
cacheImgs('communityad');

}

var isMenuAct = false; // the menu is not active yet

// Function to 'activate' images.
function actMenuItem(imgName, imgName2) {
isMenuAct = true; // the menu is now active
if(document.images){ 
var di = document.images;
        var tmpImg;
        window.imgChang = new Array();
        tmpImg = di[imgName2];
        tmpImg.backupSrc = tmpImg.src;
        tmpImg.src = window[imgName2+'off'].src;
        window.imgChang[window.imgChang.length] = tmpImg;
        tmpImg = di[imgName];
        tmpImg.backupSrc = tmpImg.src;
        tmpImg.src = window[imgName+'on'].src;
        window.imgChang[window.imgChang.length] = tmpImg;
        for(var c = 1;c <= 16;c++)
        {
            tmpImg = di['holder'+c];
            tmpImg.backupSrc = tmpImg.src;
            tmpImg.src = window[imgName+'ad'+c].src;
            window.imgChang[window.imgChang.length] = tmpImg;
        }
    }
}

// Function to 'restore' images.
function inactMenuItem() 
{
    isMenuAct = false // the menu is no longer active
    if (document.images)
    { 
        var tmpImg;
        for(var c = 0;c < window.imgChang.length;c++)
        {
            tmpImg = window.imgChang[c];
            tmpImg.src = tmpImg.backupSrc;
        }
    }
}
// -->