if (document.images) {
        var xanaduon = new Image();
        xanaduon.src = "/Images/xanadu/xanadon.gif";
        var xanaduoff = new Image();
        xanaduoff.src = "/Images/xanadu/xanadoff.gif";

		var ftpon = new Image();
        ftpon.src = "/Images/xanadu/ftpon.gif";
        var ftpoff = new Image();
        ftpoff.src = "/Images/xanadu/ftpoff.gif";
		
		var xspecon = new Image();
        xspecon.src = "/Images/xanadu/xspecbon.gif";
        var xspecoff = new Image();
        xspecoff.src = "/Images/xanadu/xspecboff.gif";
		
		var ximon = new Image();
        ximon.src = "/Images/xanadu/ximon.gif";
        var ximoff = new Image();
        ximoff.src = "/Images/xanadu/ximoff.gif";
		
		var xronon = new Image();
        xronon.src = "/Images/xanadu/xronon.gif";
        var xronoff = new Image();
        xronoff.src = "/Images/xanadu/xronoff.gif";
}

function rollon(imgName) {
    if (document.images) 
        document[imgName].src = eval(imgName + 'on.src');
    
}

function rolloff(imgName) {
    if (document.images) 
        document[imgName].src = eval(imgName + 'off.src');
}