if (document.images)
   {
     pic1on= new Image(80,50);
     pic1on.src="images/servicesB.gif";  

     pic2on=new Image(89,50);
     pic2on.src="images/bookingsB.gif";

     pic3on= new Image(180,50);
     pic3on.src="images/paymentB.gif";

     pic4on= new Image(73,50);
     pic4on.src="images/contactB.gif";

     pic5on= new Image(42,50);
     pic5on.src="images/blogB.gif";

     pic6on= new Image(19,10);
     pic6on.src="images/email1.gif";

     pic1off= new Image(80,50);
     pic1off.src="images/servicesA.gif";

     pic2off=new Image(89,50);
     pic2off.src="images/bookingsA.gif";

     pic3off= new Image(180,50);
     pic3off.src="images/paymentA.gif";

     pic4off=new Image(73,50);
     pic4off.src="images/contactA.gif";

     pic5off=new Image(42,50);
     pic5off.src="images/blogA.gif";

     pic6off= new Image(19,10);
     pic6off.src="images/email0.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;
    }
 }