function prepareImageSwap(elem,mouseOver,mouseOutRestore,mouseDown,mouseUpRestore,mouseOut,mouseUp) {
//Do not delete these comments.
//Non-Obtrusive Image Swap Script V1.1 by Hesido.com
//Attribution required on all accounts
    if (typeof(elem) == 'string') elem = document.getElementById(elem);
    if (elem == null) return;
    var regg = /(.*)(_off\.)([^\.]{3,4})$/
    var prel = new Array(), img, imgList, imgsrc, mtchd;
    imgList = elem.getElementsByTagName('img');
    for (var i=0; img = imgList[i]; i++) {
        if (!img.rolloverSet && img.src.match(regg)) {
            mtchd = img.src.match(regg);
            img.hoverSRC = mtchd[1]+'_on.'+ mtchd[3];
            img.outSRC = img.src;
            if (typeof(mouseOver) != 'undefined') {
                img.hoverSRC = (mouseOver) ? mtchd[1]+'_on.'+ mtchd[3] : false;
                img.outSRC = (mouseOut) ? mtchd[1]+'_ou.'+ mtchd[3] : (mouseOver && mouseOutRestore) ? img.src : false;
                img.mdownSRC = (mouseDown) ? mtchd[1]+'_md.' + mtchd[3] : false;
                img.mupSRC = (mouseUp) ? mtchd[1]+'_mu.' + mtchd[3] : (mouseOver && mouseDown && mouseUpRestore) ? img.hoverSRC : (mouseDown && mouseUpRestore) ? img.src : false;
                }
            if (img.hoverSRC) {preLoadImg(img.hoverSRC); img.onmouseover = imgHoverSwap;}
            if (img.outSRC) {preLoadImg(img.outSRC); img.onmouseout = imgOutSwap;}
            if (img.mdownSRC) {preLoadImg(img.mdownSRC); img.onmousedown = imgMouseDownSwap;}
            if (img.mupSRC) {preLoadImg(img.mupSRC); img.onmouseup = imgMouseUpSwap;}
            img.rolloverSet = true;
        }
    }
    function preLoadImg(imgSrc) {
        prel[prel.length] = new Image(); prel[prel.length-1].src = imgSrc;
    }
}
function imgHoverSwap() {this.src = this.hoverSRC;}
function imgOutSwap() {this.src = this.outSRC;}
function imgMouseDownSwap() {this.src = this.mdownSRC;}
function imgMouseUpSwap() {this.src = this.mupSRC;}