if (document.images)
   {
     image_off= new Image(215,260);
     image_off.src="../images/dryers/trio.jpg";  

     image1= new Image(215,260);
     image1.src="../images/vac-dry-blow/2000ev215.gif";
     image2= new Image(215,260);
     image2.src="../images/vac-dry-blow/2000pv215.gif";  
   }

function change1(picName,imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + ".src");
      document[picName].src= imgOn;
    }
 }