function callsearch() {
    var pcode = document.getElementById("postalcode").value;
    msel = document.getElementById("nearestnum");
    for (i = 0; i < msel.length; i++) {
        if (msel.options[i].selected)
            num = msel.options[i].text;
    }
    if (pcode == "") {
        alert("Enter postal code");
    } else {
        window.location = '/en/mr-lube-near-you/locate-a-mr-lube.aspx?action=callfindlocation&postalcode=' + pcode + '&nearestnum=' + num;
    }
}