function popUpWindow(url) {
    var newWin = top.open(url,'popup','menubar=yes,scrollbars=yes,resizable=yes,width=780,height=655');
    newWin.focus();
}

function clearTextField( El ) {
    var TxtField = document.getElementById(El);
    TxtField.value = '';
}

function updateClass(el) {
    el.className = 'toplevelselected';
}