function initSwap() {
    icn_ov = new Image(14, 11);
    icn_ov.src = "/images/icn_ov.gif";
    if (document.getElementById("GalleryListing")) {
        anchors = document.getElementById("GalleryListing").getElementsByTagName("a");
        for(i = 0; i < anchors.length; i++) {
            anchors[i].onmouseover=function() {
                imgs = this.getElementsByTagName("img")
                imgs[0].src = "/images/icn_ov.gif";
            }
            
            anchors[i].onmouseout=function() {
                imgs = this.getElementsByTagName("img")
                imgs[0].src = "/images/icn.gif";
            }
        }
    }
}