if (document.images)
   {
     pic1on= new Image(45,56);
     pic1on.src="template_images/homebutton_h.gif";  
     pic1off= new Image(45,56);
     pic1off.src="template_images/homebutton.gif";
	 
	 pic2on= new Image(45,56);
     pic2on.src="template_images/contactbutton_h.gif";  
     pic2off= new Image(45,56);
     pic2off.src="template_images/contactbutton.gif";
	 
	 pic3on= new Image(45,56);
     pic3on.src="template_images/visitalabutton_h.gif";  
     pic3off= new Image(45,56);
     pic3off.src="template_images/visitalabutton.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;
    }
 }