if (document.images)
   {

     pic1on= new Image(120,12);
     pic1on.src="nav/bmps/on/auvi.bmp";  
     pic2on= new Image(101,12);
     pic2on.src="nav/bmps/on/disko.bmp";
     pic3on= new Image(65,12);
     pic3on.src="nav/bmps/on/gall.bmp";  
     pic4on= new Image(75,12);
     pic4on.src="nav/bmps/on/akce.bmp";  
     pic5on= new Image(47,12);
     pic5on.src="nav/bmps/on/about.bmp";
     pic6on= new Image(49,12);
     pic6on.src="nav/bmps/on/kniha.bmp";  
     pic7on= new Image(37,12);
     pic7on.src="nav/bmps/on/blok.bmp";   
     pic8on= new Image(38,12);
     pic8on.src="nav/bmps/on/domu.bmp";  
     pic9on= new Image(57,12);
     pic9on.src="nav/bmps/on/links.bmp";  

     pic1off= new Image(120,12);
     pic1off.src="nav/bmps/off/auvi.bmp";  
     pic2off= new Image(101,12);
     pic2off.src="nav/bmps/off/disko.bmp";
     pic3off= new Image(65,12);
     pic3off.src="nav/bmps/off/gall.bmp";  
     pic4off= new Image(75,12);
     pic4off.src="nav/bmps/off/akce.bmp";  
     pic5off= new Image(47,12);
     pic5off.src="nav/bmps/off/about.bmp";
     pic6off= new Image(49,12);
     pic6off.src="nav/bmps/off/kniha.bmp";  
     pic7off= new Image(37,12);
     pic7off.src="nav/bmps/off/blok.bmp";  
     pic8off= new Image(38,12);
     pic8off.src="nav/bmps/off/domu.bmp";  
     pic9off= new Image(57,12);
     pic9off.src="nav/bmps/off/links.bmp";  

   }

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

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