//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Het post formulier checken

function checkForm(what)
 {
    var valid = true;
    var checkBoxes = false;
    var checkboxChecked = false;
    var radioButtons = false;
    var radioChecked = false;
    var emptyField = new Array
    var x = 0;

    for (var i=0, j=what.elements.length; i<j; i++) {
        myType = what.elements[i].type;
        if (myType == 'radio') {
            radioButtons = true;
           if (what.elements[i].checked) radioChecked = true;
        }

//        if (myType == 'checkbox') {
//            checkBoxes = true;
//            if (what.elements[i].checked) checkboxChecked = true;
//        }

        if (myType == 'password' || myType == 'text' || myType == 'textarea')
            if (what.elements[i].value == '') {valid = false;
             emptyField[x] = what.elements[i].id; x++;
            }
    }

//    if ((checkBoxes && !checkboxChecked) || (radioButtons && !radioChecked)) valid = false;

    if (!valid)
        alert(emptyField[0]);
    if (valid != false) {showLoading();}
    return valid;
 }