function switchImage(imgName, imgSrc) {
  if (document.images) {
    if (imgSrc != "none") {
      document.images[imgName].src = imgSrc;
    }
  }
};


function simplePreload() { 
  var args = simplePreload.arguments;
  document.imageArray = new Array(args.length);
  for(var i=0; i<args.length; i++) {
    document.imageArray[i] = new Image;
    document.imageArray[i].src = args[i];
  }
};

function showMenu(element){ element.className += "hover"; }
function hideMenu(element){	element.className = element.className = ""; }