function CreateButton(url, imgOnMsOver, imgOnMsOut, width, height, toolTip)
{
  var obj = document.createElement("a");
  obj.href = url;
  obj.img = document.createElement("img");
  obj.img.src = imgOnMsOut;
  obj.img.width = width;
  obj.img.height = height;
  obj.img.border = 0;
  obj.img.align = "middle";
  obj.img.alt = toolTip;
  obj.img.title = toolTip;
  obj.appendChild(obj.img);
  obj.imgOnMsOver = new Image();
  obj.imgOnMsOver.src = imgOnMsOver;
  obj.imgOnMsOut = new Image();
  obj.imgOnMsOut.src = imgOnMsOut;
  
  function msOver()
  {
    this.img.src = this.imgOnMsOver.src;
  }
  
  function msOut()
  {
    this.img.src = this.imgOnMsOut.src;
  }
  
  obj.onmouseover = msOver;
  obj.onmouseout = msOut;
  return obj;
}