if (document.images)
   {
     pic1on= new Image(100,25);
     pic1on.src="../images/btn_join_on.jpg";
     pic2on= new Image(100,25);
     pic2on.src="../images/btn_getinv_on.jpg";
     pic3on= new Image(100,25);
     pic3on.src="../images/btn_about_on.jpg";
     pic4on= new Image(100,25);
     pic4on.src="../images/btn_contact_on.jpg";
     pic5on= new Image(100,25);
     pic5on.src="../images/arch_join_on.jpg";
     pic6on= new Image(100,25);
     pic6on.src="../images/arch_update_on.jpg";
     pic7on= new Image(100,25);
     pic7on.src="../images/arch_scholarship_on.jpg";
     pic8on= new Image(100,25);
     pic8on.src="../images/arch_gift_on.jpg";     

     pic1off= new Image(100,25);
     pic1off.src="../images/btn_join_out.jpg";
     pic2off= new Image(100,25);
     pic2off.src="../images/btn_getinv_out.jpg";
     pic3off= new Image(100,25);
     pic3off.src="../images/btn_about_out.jpg";
     pic4off= new Image(100,25);
     pic4off.src="../images/btn_contact_out.jpg";
     pic5off= new Image(100,25);
     pic5off.src="../images/arch_join_out.jpg";
     pic6off= new Image(100,25);
     pic6off.src="../images/arch_update_out.jpg";
     pic7off= new Image(100,25);
     pic7off.src="../images/arch_scholarship_out.jpg";
     pic8off= new Image(100,25);
     pic8off.src="../images/arch_gift_out.jpg";     
   }

function lightup(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
 }

function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }