function shopwin(url,scroll,name){
                width=900;
                height=740;
                windowName=" + name + ";
                tpop_bildschirmx = screen.availWidth;
                tpop_bildschirmy = screen.availHeight;
                tpop_startx = Math.round(tpop_bildschirmx / 2) - (800/ 2);
                tpop_starty = Math.round(tpop_bildschirmy / 2) - (600/ 2);
                winFeatures= "height=" + height + ",width=" + width + ",resizable=no,toolbar=no,scrollbars=" + scroll + ",status=no,menubar=no";
                win_shop = window.open(url, windowName, winFeatures);
                win_shop.moveTo(tpop_startx,tpop_starty);
                win_shop.focus();
}