function shiftthumbs() {
  var images = document.getElementsByName("thumbnail");
  for (i=0; i<images.length; i++) {
    if (images[i].height > 97) {
      images[i].style.margin = "-" + (images[i].height-97)/2 + "px 0 0 0";
    } else if (images[i].width > 97) {
      images[i].style.margin = "0 0 0 -" + (images[i].width-97)/2 + "px";
    }	
  }
}

function randomshowroom() {
	document.write('<img src="/images/showroom-0' + (Math.round(Math.random()*3) + 1) + '.jpg" alt="Design Showroom" />');
}