if (document.images) {
  image1on = new Image();
  image1on.src = "buttins/about_over.png";
  image2on = new Image();
  image2on.src = "buttins/resource_over.png";
  image3on = new Image();
  image3on.src = "buttins/workshop_over.png";
  image4on = new Image();
  image4on.src = "buttins/links_over.png";
  image5on = new Image();
  image5on.src = "buttins/forum_over.png";
  image6on = new Image();
  image6on.src = "buttins/contact_over.png";
  image7on = new Image();
  image7on.src = "buttins/program_over.png";
  image8on = new Image();
  image8on.src = "buttins/r0_over.png";
  image9on = new Image();
  image9on.src = "buttins/r2_over.png";
  image10on = new Image();
  image10on.src = "buttins/r3_over.png";
  image11on = new Image();
  image11on.src = "buttins/r4_over.png";
  image12on = new Image();
  image12on.src = "buttins/r5_over.png";
  image13on = new Image();
  image13on.src = "buttins/r6_over.png";
  image14on = new Image();
  image14on.src = "buttins/r7_over.png";

  image1off = new Image();
  image1off.src = "buttins/about.png";
  image2off = new Image();
  image2off.src = "buttins/resource.png";
  image3off = new Image();
  image3off.src = "buttins/workshop.png";
  image4off = new Image();
  image4off.src = "buttins/links.png";
  image5off = new Image();
  image5off.src = "buttins/forum.png";
  image6off = new Image();
  image6off.src = "buttins/contact.png";
  image7off = new Image();
  image7off.src = "buttins/program.png";
  image8off = new Image();
  image8off.src = "buttins/r0.png";
  image9off = new Image();
  image9off.src = "buttins/r2.png";
  image10off = new Image();
  image10off.src = "buttins/r3.png";
  image11off = new Image();
  image11off.src = "buttins/r4.png";
  image12off = new Image();
  image12off.src = "buttins/r5.png";
  image13off = new Image();
  image13off.src = "buttins/r6.png";
  image14off = new Image();
  image14off.src = "buttins/r7.png";


}
function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}