function consultscreen() {
                window.open("","consult","width=600,height=500,resizable=no,toolbar=no,location=no,directories=no,scrollbars=yes")
                } 
function screen1() {
                window.open("","products1","width=460,height=500,resizable=no,toolbar=no,location=no,directories=no,scrollbars=no")
                } 


if (document.images) {

         button1on = new Image()
         button1on.src = "images/buttonon.gif"
	 button2on = new Image()
         button2on.src = "images/buttonon.gif"
	 button3on = new Image()
         button3on.src = "images/buttonon.gif"
 	 button4on = new Image()
         button4on.src = "images/buttonon.gif"
	 button5on = new Image()
         button5on.src = "images/buttonon.gif"
	 button6on = new Image()
         button6on.src = "images/buttonon.gif"
	 button7on = new Image()
         button7on.src = "images/buttonon.gif"
	 button8on = new Image()
         button8on.src = "images/buttonon.gif"
	 button9on = new Image()
         button9on.src = "images/buttonon.gif"
	 button10on = new Image()
         button10on.src = "images/buttonon.gif"
	 button11on = new Image()
         button11on.src = "images/buttonon.gif"
	 button12on = new Image()
         button12on.src = "images/buttonon.gif"
	 button13on = new Image()
         button13on.src = "images/buttonon.gif"
	 button14on = new Image()
         button14on.src = "images/buttonon.gif"
	 button15on = new Image()
         button15on.src = "images/buttonon.gif"
	 button16on = new Image()
         button16on.src = "images/buttonon.gif"
	 button17on = new Image()
         button17on.src = "images/buttonon.gif"
	 button18on = new Image()
         button18on.src = "images/buttonon.gif"
	 button19on = new Image()
         button19on.src = "images/buttonon.gif"
	 button20on = new Image()
         button20on.src = "images/buttonon.gif"
         
         button1off = new Image()
         button1off.src = "images/buttonoff.gif"
	 button2off = new Image()
         button2off.src = "images/buttonoff.gif"
	 button3off = new Image()
         button3off.src = "images/buttonoff.gif"
 	 button4off = new Image()
         button4off.src = "images/buttonoff.gif"
	 button5off = new Image()
         button5off.src = "images/buttonoff.gif"
	 button6off = new Image()
         button6off.src = "images/buttonoff.gif"
	 button7off = new Image()
         button7off.src = "images/buttonoff.gif"
	 button8off = new Image()
         button8off.src = "images/buttonoff.gif"
	 button9off = new Image()
         button9off.src = "images/buttonoff.gif"
	 button10off = new Image()
         button10off.src = "images/buttonoff.gif"
	 button11off = new Image()
         button11off.src = "images/buttonoff.gif"
	 button12off = new Image()
         button12off.src = "images/buttonoff.gif"
	 button13off = new Image()
         button13off.src = "images/buttonoff.gif"
	 button14off = new Image()
         button14off.src = "images/buttonoff.gif"
	 button15off = new Image()
         button15off.src = "images/buttonoff.gif"
	 button16off = new Image()
         button16off.src = "images/buttonoff.gif"
	 button17off = new Image()
         button17off.src = "images/buttonoff.gif"
	 button18off = new Image()
         button18off.src = "images/buttonoff.gif"
	 button19off = new Image()
         button19off.src = "images/buttonoff.gif"
	 button20off = new Image()
         button20off.src = "images/buttonoff.gif"	

         }

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

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