//rollover

var img_cache = new Object();
var this_page = "";
var this_id = "";

window.onload = function() {
    if (document.getElementById) {
        var ar = document.getElementsByTagName('img');
        for (var x = 0; ar[x]; x++) {
            var im = ar[x];
            if (im.getAttribute) {
                im.hoversrc = im.getAttribute('hoversrc');
            }
            if (im.hoversrc) {
                im.rootsrc = im.src;
                im.onmouseout = function() {
                    this.src = this.rootsrc;
                }

                if (!img_cache[im.hoversrc]) {
                    img_cache[im.hoversrc] = new Image();
                    img_cache[im.hoversrc].src = im.hoversrc;
                }

                im.onmouseover = function() {
                    this.src = this.hoversrc;
                }


            }
        }
    }
}