if (document.images)
   {
  pic1on= new Image(99,29);
     pic1on.src="images/act_derfhg.gif";  
  pic2on= new Image(27,29);
     pic2on.src="images/act_dieausbildung.gif"; 
	pic3on= new Image(55,29);
     pic3on.src="images/act_diekarrierebegleitung.gif";  
	pic4on= new Image(55,29);
     pic4on.src="images/act_jobs.gif";  
  pic5on= new Image(44,29);
     pic5on.src="images/act_infoskontakt.gif"; 
  pic6on= new Image(63,29);
     pic6on.src="images/act_presse.gif";
	pic7on= new Image(63,29);
     pic7on.src="images/act_mitgliedsbetriebe.gif";  

	pic8on= new Image(63,29);
     pic8on.src="images/act_seitenanfang.gif";  
	pic9on= new Image(63,29);
     pic9on.src="images/act_druckversion.gif";
       
  pic1off= new Image(99,29);
     pic1off.src="images/no_derfhg.gif";  
  pic2off= new Image(27,29);
     pic2off.src="images/no_dieausbildung.gif"; 
	pic3off= new Image(55,29);
     pic3off.src="images/no_diekarrierebegleitung.gif";  
	pic4off= new Image(55,29);
     pic4off.src="images/no_jobs.gif";  
  pic5off= new Image(44,29);
     pic5off.src="images/no_infoskontakt.gif"; 
  pic6off= new Image(63,29);
     pic6off.src="images/no_presse.gif";
	pic7off= new Image(63,29);
     pic7off.src="images/no_mitgliedsbetriebe.gif";  

	pic8off= new Image(63,29);
     pic8off.src="images/no_seitenanfang.gif";  
	pic9off= new Image(63,29);
     pic9off.src="images/no_druckversion.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;
    }
 }