var siteRoot = "/templates/pmb/_images";

function preLoad() {
if(document.images) {
  img1= new Image();
  img2= new Image();
  img3= new Image();
  img4= new Image();

  img1.src=siteRoot+"/btnAbout-over.gif";
  img2.src=siteRoot+"/btnCommunities-over.gif";
  img3.src=siteRoot+"/btnCustom-over.gif";
  img4.src=siteRoot+"/btnContact-over.gif";
}
}

function move_over(img_name,img_src) {
 document[img_name].src=siteRoot+"/"+img_src;
}
function move_out(img_name,img_src) {
 document[img_name].src=siteRoot+"/"+img_src;
}