var registeredImages = new Array();

function imgOn(imgName) {
	if (registeredImages[imgName][1].src != undefined)
	document.images[imgName].src = registeredImages[imgName][1].src;
}

function imgOff(imgName) {
	if (registeredImages[imgName][0].src != undefined)
	document.images[imgName].src = registeredImages[imgName][0].src;
}



var preloadFlag = false;
var arrImages = new Array();

function preloadImages()
{
  var strImageName = "";
  var counter = 0;

  for(i=0; i<document.images.length; i++) {
    imgName = document.images[i].name;
    if (imgName != "") {
	registeredImages[imgName] = new Array( new Image(), new Image());
	registeredImages[imgName][0].src = document.images[i].src;
	n = document.images[i].src.replace("Selected.jpg",".jpg");
	n = n.replace(".jpg","_over.jpg");
	registeredImages[imgName][1].src = n;
      counter++;
    }
  }

  // alert("There are " + arrImages.length + " images loaded");
  preloadFlag = true;
}