if (document.images)
   {
     pic1on= new Image(100,25);
     pic1on.src="images/services_down.jpg";  

     pic1off= new Image(100,25);
     pic1off.src="images/services_up.jpg";
   
     pic2on= new Image(100,25);
     pic2on.src="images/portfolio_down.jpg";  

     pic2off= new Image(100,25);
     pic2off.src="images/portfolio_up.jpg";
   
     pic5on= new Image(100,25);
     pic5on.src="images/partners_down.jpg";  

     pic5off= new Image(100,25);
     pic5off.src="images/partners_up.jpg";
   
     pic4on= new Image(100,25);
     pic4on.src="images/contact_down.jpg";  

     pic4off= new Image(100,25);
     pic4off.src="images/contact_up.jpg";
	 
	 pic7on= new Image(100,25);
     pic7on.src="images/seemore_over.jpg";  

     pic7off= new Image(100,25);
     pic7off.src="images/seemore_up.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;
    }
 }