if (document.images) {
	img1on = new Image();           // The onmouseover image
	img1on.src = "images/privacy-policy_01.jpg";  
	
	img1off = new Image();          // The normally seen image
	img1off.src = "images/privacy-policy_00.jpg"; 
	
	img2on = new Image();           // The onmouseover image
	img2on.src = "images/sitemap_01.jpg";  
	
	img2off = new Image();          // The normally seen image
	img2off.src = "images/sitemap_00.jpg"; 
	
  }				  //This function changes the image when over.
    function imgOn(imgName) {
            if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
            }
    }				   //This function changes the image back when off.
    function imgOff(imgName) {
            if (document.images) {
            document[imgName].src = eval(imgName + "off.src");        
            }
    }