// JavaScript Document


  if (document.images)
   {
     button1on= new Image(143,32);
     button1on.src="/images/but1.gif";
     
     button1off= new Image(143,32);
     button1off.src="/images/but1_f2.gif";     
     
     button2on= new Image(143,32);
     button2on.src="/images/but2.gif";
     
     button2off= new Image(143,32);
     button2off.src="/images/but2_f2.gif";    
     
     button4on= new Image(143,32);
     button4on.src="/images/but4.gif";
     
     button4off= new Image(143,32);
     button4off.src="/images/but4_f2.gif";  
     
     button5on= new Image(143,32);
     button5on.src="/images/but5.gif";
     
     button5off= new Image(143,32);
     button5off.src="/images/but5_f2.gif"; 
     
     button7on= new Image(143,32);
     button7on.src="/images/but7.gif";
     
     button7off= new Image(143,32);
     button7off.src="/images/but7_f2.gif";    
     
     button8on= new Image(143,32);
     button8on.src="/images/but8.gif";
     
     button8off= new Image(143,32);
     button8off.src="/images/but8_f2.gif";   
   }

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;
    }
 }