if (document.images) {

		var homeroll = new Array();
	    var featuresroll = new Array();
	    var demoroll = new Array();
	    var buyroll = new Array();
	    var aboutroll = new Array();
	    var contactroll = new Array();
	
	    homeroll[0] = new Image();
	    homeroll[1] = new Image();
	    featuresroll[0] = new Image();
	    featuresroll[1] = new Image();
	    demoroll[0] = new Image();
	    demoroll[1] = new Image();
	    buyroll[0] = new Image();
	    buyroll[1] = new Image();
	    aboutroll[0] = new Image();
	    aboutroll[1] = new Image();
	    contactroll[0] = new Image();
	    contactroll[1] = new Image();
	
	    homeroll[0].src = "images/home.gif";
	    featuresroll[0].src = "images/features.gif";
	    demoroll[0].src = "images/demo.gif";
	    buyroll[0].src = "images/buy.gif";
	    aboutroll[0].src = "images/about.gif";
	    contactroll[0].src = "images/contact.gif";
	    homeroll[1].src = "images/homeroll.gif";
	    featuresroll[1].src = "images/featuresroll.gif";
	    demoroll[1].src = "images/demoroll.gif";
	    buyroll[1].src = "images/buyroll.gif";
	    aboutroll[1].src = "images/aboutroll.gif";
	    contactroll[1].src = "images/contactroll.gif";
    } else {
	    homeroll[0] = "";
	    homeroll[1] = "";
	    featuresroll[0] = "";
	    featuresroll[1] = "";
	    demoroll[0] = "";
	    demoroll[1] = "";
	    buyroll[0] = "";
	    buyroll[1] = "";
	    aboutroll[0] = "";
	    aboutroll[1] = "";
	    contactroll[0] = "";
	    contactroll[1] = "";
		document.homereg = "";
		document.features = "";
		document.demo = "";
		document.buy = "";
		document.about = "";
		document.contact = "";
    }

function swap(menu,num) {
    if(document.images) {
	    if (menu == 0) {
            document.homereg.src = homeroll[num].src;
		}
	    if (menu == 1) {
            document.features.src = featuresroll[num].src;
		}
	    if (menu == 2) {
            document.demo.src = demoroll[num].src;
		}
	    if (menu == 3) {
            document.buy.src = buyroll[num].src;
		}
	    if (menu == 4) {
            document.about.src = aboutroll[num].src;
		}
		if (menu == 5) {
            document.contact.src = contactroll[num].src;
		}
    }
}