var image_count = 0,
    dhtmlok = true,
    images_needed = 0;

// TODO figure out why rollovers aren't preloading correctly

function initialize(count) {
    images_needed = count;
} // end function initialize

function count_images() {
   if (++image_count >= images_needed) {
      dhtmlok = true;
   }
} // end function count_images


function changeImage(name, newsrc) {
   if (dhtmlok) {
      document.images[name].src = newsrc;
   }
} // end function changeImage


function preloadImages() {
  var doc = document;
  if (doc.images) {
     var myImages = new Array();
     var args = preloadImages.arguments;
     initialize(args.length);
     for(i = 0; i < args.length; i++) {
        myImages[i] = new Image();
        myImages[i].onload = count_images;
        myImages[i].src = args[i];
     }
  }
}
  
// Alternative way -- generated thru Dreamweaver  
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}