browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))

	if ( browser) {

	image1 = new Image;
	image1.src = "images/menu1.gif";
	image1_on = new Image;
	image1_on.src = "images/menu1_over.gif";

	image2 = new Image;
	image2.src = "images/menu2.gif";
	image2_on = new Image;
	image2_on.src = "images/menu2_over.gif";

	image3 = new Image;
	image3.src = "images/menu3.gif";
	image3_on = new Image;
	image3_on.src = "images/menu3_over.gif";

	image4 = new Image;
	image4.src = "images/menu4.gif";
	image4_on = new Image;
	image4_on.src = "images/menu4_over.gif";

	image5 = new Image;
	image5.src = "images/menu5.gif";
	image5_on = new Image;
	image5_on.src = "images/menu5_over.gif";

	image6 = new Image;
	image6.src = "images/menu6.gif";
	image6_on = new Image;
	image6_on.src = "images/menu6_over.gif";

	}

	function Swap(imgDocID,imgObjName) {
	    if ( browser) {
            document.images[imgDocID].src = eval(imgObjName + ".src")
            }
	}