if(document.images){
  comment_on = new Image(16, 16);
  comment_off = new Image(16, 16);
  comment_on.src = "http://www.hotpaprs.com/images/comment_on.png";
  comment_off.src = "http://www.hotpaprs.com/images/comment_off.png";
  download_on = new Image(16, 16);
  download_off = new Image(16, 16);
  download_on.src = "http://www.hotpaprs.com/images/download_on.png";
  download_off.src = "http://www.hotpaprs.com/images/download_off.png";
}else{
  comment_on = "";
  comment_off = "";
  download_on = "";
  download_off = "";
}

function rollover(thisImage, newImage){
  if(document.images){
	document[thisImage].src = eval(newImage + ".src");
  }
}