rollovers = "false"
browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3){
   rollovers = "true";
}else{
   if (browserName == "Microsoft Internet Explorer" && browserVer >= 3){
      rollovers = "true";
   }
}

//alert ("rollovers = " + rollovers);

if (rollovers == "true"){

  topval = 9;
  names = new Array (
    "b0",
    "b1",
    "b2",
    "b3",
    "b4",
    "b5",
    "b6",
    "b7",
    "b8" );

  buttons = new Array(topval * 2);

   for (m=0; m<topval; m++) {
    buttons[m] = new Image();
    buttons[m+topval] = new Image();
    buttons[m].src ="./assets/"+names[m]+"u.gif";
    buttons[m+topval].src ="./assets/"+names[m]+"d.gif";
  }
}

function swap(des,num) {
 if (rollovers == "true") {
    document.images[names[des]].src = buttons[num].src;
 }
}