if (document.images)
   {
     pic1on= new Image(100,25);
     pic1on.src="images/about2.png";  
		 pic2on= new Image(100,25);
     pic2on.src="images/locations2.png"; 
     pic3on= new Image(100,25);
     pic3on.src="images/takeout2.png";
		 pic4on= new Image(100,25);
     pic4on.src="images/home2.png";  
		  
		 pic1off= new Image(100,25);
     pic1off.src="images/about.png";
     pic2off= new Image(100,25);
     pic2off.src="images/locations.png";
		 pic3off= new Image(100,25);
     pic3off.src="images/takeout.png";
		 pic4off= new Image(100,25);
     pic4off.src="images/home.png";
	
	 }
	  
		
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;
    }
 }