var popup;
function zoom(id,width,height) {
    var pW, pH, lW, lH, scroll=1;
    if (popup) popup.close();
    pW = width+25;
    pH = height+100;

    popup=window.open('/zoom/'+id,'zoom','width='+pW+', height='+pH+', scrollbars=1, resizable=0, location=no, status=no');
    popup.focus();
}