if (document.images) {
  var myImages = [
    "menu_small.gif",
    "menu_small.jpg",
    "menu_small_over.gif",
    "nav_over.jpg",
    "navback.gif",
    "navbut.gif",
    "navbut_over.gif",
    "searchback.gif",
    "application.gif",
    "application_over.gif",
    "application_over.jpg",
    "blank.gif",
    "footer.gif",
    "footer_over.gif",
    "footer_sel.gif",
    "footer_small.gif",
    "footer_small_over.gif",
    "frameds.gif",
    "menu.gif",
    "menu_over.gif",
    "menu_sel.gif"]
  for (var i=0;i<myImages.length;i++) {
    var img = new Image();
    img.src='/images/'+myImages[i];
  }
}
function swapBg(obj,colorName) {
  obj.style.backgroundImage='url(/images/'+colorName+'.gif)';
}
function swap(img,on) {
  document.images[img].src='/images/'+img+((on)?'_over':'')+'.gif';
}
function swap2(name,src,on) {
  document.images[name].src='/images/'+src+((on)?'_over':'')+'.gif';
}