if (document.images)
   {
     pic1on= new Image(150,28);
     pic1on.src="men1on/images/menu-bar4_02.jpg";  
     pic1off= new Image(150,28);
     pic1off.src="men1off/images/menu-bar4_02.jpg";
   
     pic2on= new Image(116,28);
     pic2on.src="men1on/images/menu-bar4_01.jpg";  
     pic2off= new Image(116,28);
     pic2off.src="men1off/images/menu-bar4_01.jpg";
   
     pic3on= new Image(160,28);
     pic3on.src="men1on/images/menu-bar4_04.jpg";  
     pic3off= new Image(160,28);
     pic3off.src="men1off/images/menu-bar4_04.jpg";
   
     pic4on= new Image(89,28);
     pic4on.src="men1on/images/menu-bar4_06.jpg";  
     pic4off= new Image(89,28);
     pic4off.src="men1off/images/menu-bar4_06.jpg";
   
     pic5on= new Image(60,28);
     pic5on.src="men1on/images/menu-bar4_08.jpg";  
     pic5off= new Image(60,28);
     pic5off.src="men1off/images/menu-bar4_08.jpg";
   
     pic6on= new Image(91,28);
     pic6on.src="men1on/images/menu-bar4_10.jpg";  
     pic6off= new Image(91,28);
     pic6off.src="men1off/images/menu-bar4_10.jpg";
     
     pic7on= new Image(91,28);
     pic7on.src="men1on/images/logouton.jpg";  
     pic7off= new Image(91,28);
     pic7off.src="men1off/images/logoff.jpg";
     
     
     pic8on= new Image(91,28);
     pic8on.src="men1on/images/menu-bar4_12.jpg";  
     pic8off= new Image(91,28);
     pic8off.src="men1off/images/menu-bar4_12.jpg";
   
   }

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;
    }
 }