function SwitchImg() {
    var switcher = new Array();
    if (flag) {
        a = SwitchImg.arguments;
        j = 0;
        for(i=0;i<a.length;i++) {
            obj = eval("document."+a[i]);
            //alert(obj);
            switcher[j] = obj;
            switcher[j+1] = obj.src;
            obj.src = eval("document."+a[i]+"_a.src");
            j = j + 2;
        }
        document.Data = switcher;
    }
}

function RestoreImg() {
    a = document.Data;
    if ((a != null) && (flag)) {
        for(i = 0;i < a.length;i=i+2) {
            a[i].src = a[i+1];
        }
    }
}