function checkPax(url) {
    if (!document.forms[0].formtocheck[0].checked && !document.forms[0].formtocheck[1].checked) {
        alert('Please check one of the boxes.');
        return;
    }
    else if (document.forms[0].txtSalesTourID.value.length == "") {
        alert('Please enter a tour number and try again.');
        document.forms[0].txtSalesTourID.focus();
        return;
    }
    else if (isNaN(parseInt(document.forms[0].txtSalesTourID.value))) {
        alert('Please enter number only.');
        document.forms[0].txtSalesTourID.focus();
        return;
    }

    switchPleaseWait();
    if (document.forms[0].formtocheck[0].checked) {
        document.forms[0].txtAction.value = "PAXCheck";
        document.forms[0].action = url + "?salestour=" + parseInt(document.forms[0].txtSalesTourID.value);
        document.forms[0].submit();
    }
    if (document.forms[0].formtocheck[1].checked) {
        document.forms[0].txtAction.value = "PAXEnroll";
        document.forms[0].action = url;
        document.forms[0].submit();
    }
}

function switchPleaseWait() {

    var image = document.getElementById("ctl00_cphContent1_EnrollStudent_GoButton");
    var pleaseWait = document.getElementById("ctl00_cphContent1_EnrollStudent_PleaseWait");

    image.style.display = "none";
    pleaseWait.style.display = "block";
}