/* hide or show the requested div */
function toggleDiv(div_id, i) {
    //NN4+
    if(document.layers) {
       document.layers[div_id].visibility = i ? "show" : "hide";
    }
    //gecko(NN6) + IE 5+
    else if(document.getElementById) {
        var obj = document.getElementById(div_id);
        obj.style.visibility = i ? "visible" : "hidden";
    }
    // IE 4
    else if(document.all) {
        document.all[div_id].style.visibility = i ? "visible" : "hidden";
    }
}


function openWindow(url_add) {
    window.open(url_add,'popup','width=772,height=480,menubar=no,status=no,location=no,toolbar=no,scrollbars=yes');
}