    var popUp;

    function OpenCalendar(idname, postBack)
    {
        popUp = window.open('Calendar.aspx?formname=' + document.forms[0].name +
            '&id=' + idname + '&selected=' + document.forms[0].elements[idname].value + '&postBack=' + postBack,
            'popupcal',
            'width=165,height=208,left=200,top=250');
    }

    function SetDate(formName, id, newDate, postBack)
    {
        eval('var theform = document.' + formName + ';');
        popUp.close();
        theform.elements[id].value = newDate;
        if (postBack)
            __doPostBack(id,'');
    }