var imageName;

// Preload the images.
if (document.images) {
	arrow_off             = new Image();
	arrow_off.src         = "../images/arrow.gif";
	arrow_on              = new Image();
	arrow_on.src          = "../images/arrow_on.gif";
	arrow2_off            = new Image();
	arrow2_off.src        = "../images/arrow2.gif";
	arrow2_on             = new Image();
	arrow2_on.src         = "../images/arrow2_on.gif";
}

// Image rollover functions.
function pointOn(imageName) {
    if (document.images)
        document[imageName].src = arrow_on.src;
}

function pointOff(imageName) {
    if (document.images)
        document[imageName].src = arrow_off.src;
}

function pointOn2(imageName) {
    if (document.images)
        document[imageName].src = arrow2_on.src;
}

function pointOff2(imageName) {
    if (document.images)
        document[imageName].src = arrow2_off.src;
}