var timeLeft;

function initAdModal(displayTime) {
    timeLeft = displayTime;
    if (displayTime > 0) {
        $('#addialog').jqm({
            modal: true 
        });
        $('#addialog').jqmShow();
        countDown();
    }
}
function countDown() {
    if (timeLeft > 0) {
        $('#modalcountdown').html('This window will close in '+ timeLeft +' seconds...');
        timeLeft--;
        setTimeout("countDown()", 1000);
    }
    else {
        $('#addialog').jqmHide();
    }
}