function closepopup (callback) {

        var options = new Object ();
        if (callback) {
            options.onUnblock = callback;
       }
        window.top.$.unblockUI (options);

    }

    function popup (elementid) {

        var elem = $("#"+elementid).html();
       
        window.top.$.blockUI({

            css: {
                width: "auto",
                position: "absolute",
                padding: "10px"
            },
            message: elem,
            centerX: false,
            centerY: false

        });

        centerpopup(elementid);
         
    } 

    function centerpopup (elementid) {
        var w = window.top.$(".blockMsg").width ();
        var h = window.top.$(".blockMsg").height ();

       
        var l = window.top.$().width()/2 - w/2 -15 + window.top.$(".xmenu").width()/2;
        var t = window.top.$().scrollTop() + 100;



        window.top.$(".blockMsg").css("left",l+'px');
        window.top.$(".blockMsg").css("top",t+'px');
    }