if (document.images)
   {
     pic01on= new Image(174,24);
     pic01on.src="images/buttons/010000_on.gif";  
     pic01aon= new Image(174,24);
     pic01aon.src="images/buttons/010100_on.gif"; 
     pic01bon= new Image(174,24);
     pic01bon.src="images/buttons/010200_on.gif"; 
     pic01con= new Image(174,24);
     pic01con.src="images/buttons/010300_on.gif"; 
     pic01don= new Image(174,24);
     pic01don.src="images/buttons/010400_on.gif"; 
     pic01eon= new Image(174,24);
     pic01eon.src="images/buttons/010500_on.gif"; 
     
     pic02on= new Image(174,24);
     pic02on.src="images/buttons/020000_on.gif";       
     
     pic03on= new Image(174,24);
     pic03on.src="images/buttons/030000_on.gif"; 
     
     pic04on= new Image(174,24);
     pic04on.src="images/buttons/040000_on.gif"; 
     
     pic05on= new Image(174,24);
     pic05on.src="images/buttons/050000_on.gif"; 
     
     pic06on= new Image(174,24);
     pic06on.src="images/buttons/060000_on.gif"; 
     
     pic07on= new Image(174,24);
     pic07on.src="images/buttons/070000_on.gif"; 
     pic07aon= new Image(174,24);
     pic07aon.src="images/buttons/070100_on.gif"; 
     pic07bon= new Image(174,24);
     pic07bon.src="images/buttons/070200_on.gif"; 
     pic07con= new Image(174,24);
     pic07con.src="images/buttons/070300_on.gif"; 
     pic07don= new Image(174,24);
     pic07don.src="images/buttons/070400_on.gif"; 
     pic07eon= new Image(174,24);
     pic07eon.src="images/buttons/070500_on.gif"; 
     pic07fon= new Image(174,24);
     pic07fon.src="images/buttons/070600_on.gif"; 
     pic07gon= new Image(174,24);
     pic07gon.src="images/buttons/070700_on.gif"; 
     pic07hon= new Image(174,24);
     pic07hon.src="images/buttons/070800_on.gif"; 
     pic07ion= new Image(174,24);
     pic07ion.src="images/buttons/070900_on.gif";
     pic07jon= new Image(174,24);
     pic07jon.src="images/buttons/overknop-showtime.gif"; 
 
     
     pic08on= new Image(174,24);
     pic08on.src="images/buttons/080000_on.gif"; 
     
     pic09on= new Image(174,24);
     pic09on.src="images/buttons/090000_on.gif"; 
     
     pic10on= new Image(174,24);
     pic10on.src="images/buttons/100000_on.gif"; 
     
     pic11on= new Image(174,24);
     pic11on.src="images/buttons/110000_on.gif"; 
     
     pic12on= new Image(174,24);
     pic12on.src="images/buttons/overknop-daf.gif";
       
     pic13on= new Image(51,19);
     pic13on.src="images/buttons/overknop-belmij.gif";
            
     pic14on= new Image(121,19);
     pic14on.src="images/buttons/overknop-contact.gif";

     pic01off= new Image(174,24);
     pic01off.src="images/buttons/010000_off.gif";
     pic01aoff= new Image(174,24);
     pic01aoff.src="images/buttons/010100_off.gif";
     pic01boff= new Image(174,24);
     pic01boff.src="images/buttons/010200_off.gif";
     pic01coff= new Image(174,24);
     pic01coff.src="images/buttons/010300_off.gif";
     pic01doff= new Image(174,24);
     pic01doff.src="images/buttons/010400_off.gif";
     pic01eoff= new Image(174,24);
     pic01eoff.src="images/buttons/010500_off.gif";
     
     pic02off= new Image(174,24);
     pic02off.src="images/buttons/020000_off.gif";
     
     pic03off= new Image(174,24);
     pic03off.src="images/buttons/030000_off.gif";
     
     pic04off= new Image(174,24);
     pic04off.src="images/buttons/040000_off.gif";
     
     pic05off= new Image(174,24);
     pic05off.src="images/buttons/050000_off.gif";
     
     pic06off= new Image(174,24);
     pic06off.src="images/buttons/060000_off.gif";
     
     pic07off= new Image(174,24);
     pic07off.src="images/buttons/070000_off.gif";
     pic07aoff= new Image(174,24);
     pic07aoff.src="images/buttons/070100_off.gif";
     pic07boff= new Image(174,24);
     pic07boff.src="images/buttons/070200_off.gif";
     pic07coff= new Image(174,24);
     pic07coff.src="images/buttons/070300_off.gif";
     pic07doff= new Image(174,24);
     pic07doff.src="images/buttons/070400_off.gif";
     pic07eoff= new Image(174,24);
     pic07eoff.src="images/buttons/070500_off.gif";
     pic07foff= new Image(174,24);
     pic07foff.src="images/buttons/070600_off.gif";
     pic07goff= new Image(174,24);
     pic07goff.src="images/buttons/070700_off.gif";
     pic07hoff= new Image(174,24);
     pic07hoff.src="images/buttons/070800_off.gif";
     pic07ioff= new Image(174,24);
     pic07ioff.src="images/buttons/070900_off.gif";
     pic07joff= new Image(174,24);
     pic07joff.src="images/buttons/knop-showtime.gif";
     
     pic08off= new Image(174,24);
     pic08off.src="images/buttons/080000_off.gif";
     
     pic09off= new Image(174,24);
     pic09off.src="images/buttons/090000_off.gif";
     
     pic10off= new Image(174,24);
     pic10off.src="images/buttons/100000_off.gif";
     
     pic11off= new Image(174,24);
     pic11off.src="images/buttons/110000_off.gif";
     
     pic12off= new Image(174,24);
     pic12off.src="images/buttons/knop-daf.gif";
          
     pic13off= new Image(51,19);
     pic13off.src="images/buttons/knop-belmij.gif";
     
     pic14off= new Image(121,19);
     pic14off.src="images/buttons/knop-contact.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;
    }
 }