if (document.images)
   {
     pic1on= new Image;
     pic1on.src="gifs/ho1.jpg";  
     pic2on= new Image;
     pic2on.src="gifs/ho2.jpg";
	 pic3on= new Image;
     pic3on.src="gifs/ho3.jpg";  
     pic4on= new Image;
     pic4on.src="gifs/ho4.jpg";
	 pic5on= new Image;
     pic5on.src="gifs/ho5.jpg";


     pic1off= new Image;
     pic1off.src="gifs/expedien-f2_03.jpg";
     pic2off= new Image;
     pic2off.src="gifs/expedien-f2_04.jpg";
	 pic3off= new Image;
     pic3off.src="gifs/expedien-f2_05.jpg";
     pic4off= new Image;
     pic4off.src="gifs/expedien-f2_06.jpg"; 
	 pic5off= new Image;
     pic5off.src="gifs/expedien-f2_07.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;
    }
 }