var showPan = function(argurl,w,heading) {
    var myPanel = new YAHOO.widget.Panel(
        "picshowcase"
        , {
            context: ["dummy","tl","bl", ["beforeShow", "windowResize"]],
            width: (w+30)+"px",
            fixedcenter: false,
            constraintoviewport: true,
            underlay:"mate",
            close:true,
            visible:true,
            draggable:true,
            modal:true,
            effect:{effect:YAHOO.widget.ContainerEffect.FADE,duration:0.1}
        });
    myPanel.setHeader(heading);
    myPanel.setBody(
        '<div style=\"text-align:center;width:100%;\">'+
        '<img border="0" width="'+w+'" src="' + argurl + '">' + '</div>'
    );
    myPanel.render(document.body);
}