<!--
if(document.images) {
 var imgs = new Array();
 imgs[0] = new Image();  imgs[0].src = "./images/submit_a.jpg";
 imgs[1] = new Image();  imgs[1].src = "./images/submit_b.jpg";
 imgs[2] = new Image();  imgs[2].src = "./images/btn2a.jpg";
 imgs[3] = new Image();  imgs[3].src = "./images/btn2b.jpg";
 imgs[4] = new Image();  imgs[4].src = "./images/btn3a.jpg";
 imgs[5] = new Image();  imgs[5].src = "./images/btn3b.jpg";
 imgs[6] = new Image();  imgs[6].src = "./images/btn4a.jpg";
 imgs[7] = new Image();  imgs[7].src = "./images/btn4b.jpg";
}

function swapimg(id, imgname) {
 if(document.images) {
  if(imgs[imgname]) {
    document.images[id].src = imgs[imgname].src;
  }
  else {
    document.images[id].src = imgname;
  }
 }
}
//-->