<zk>
    <window id="win1" height="400px" width="600px">
        <button label="Show first dialog to start dialog with iframe" onClick="AnotherDialog.doModal(); AnotherDialog.setVisible(true);"/>
    </window>

    <window id="AnotherDialog" height="400px" width="600px" visible="false">
        <button label="Show Dialog 1 with IFrame" onClick="mainDlg.doModal(); mainDlg.setVisible(true);" />
        <button label="Close me " onClick="AnotherDialog.detach();" />
    </window>

    <window width="700px" height="550px" style="border: 1px solid gray" title="pdf test for IE 10" id="mainDlg" visible="false" parent="${AnotherDialog}">
        <window id="win2" title="load a pdf into frame, then close me!" width="650px" height="480px">
            <vbox hflex="1" vflex="1">
                <iframe id="iframe" src="http://www.zkoss.org" hflex="1" vflex="10" style="border: 1px solid gray" />

                <button upload="true" label="Select pdf File" vflex="1"> 
                    <attribute name="onUpload"><![CDATA[ 
						Object media = event.getMedia(); 
						if (media != null) iframe.setContent(media); 
					]]></attribute>
                </button>
            </vbox>
        </window>

        <button label="Click for close iframe dialog" onClick='mainDlg.detach();'/>
    </window>
</zk>