2 function toggleDisplay(element, button)
4 if (element.style.display == "none")
5 element.style.display = "";
7 element.style.display = "none";
10 function toggleVisibility(element, button)
12 if (element.style.visibility == "hidden")
13 element.style.visibility = "";
15 element.style.visibility = "hidden";
20 Play with the display and visibility toggles. Make sure that turning an inner element visible does not show it if it has a hidden or
21 non-displaying ancestor, and that making an ancestor visible and displaying shows only its descendants the are visible and displaying.
26 <input type="checkbox" checked="true" onclick="toggleDisplay(document.getElementById('middle'))"> Outer frame display
29 <input type="checkbox" checked="true" onclick="toggleDisplay(document.getElementById('middle').contentDocument.getElementById('inner'))"> Inner frame display
34 <input type="checkbox" checked="true" onclick="toggleVisibility(document.getElementById('middle'))"> Outer frame visibility
37 <input type="checkbox" checked="true" onclick="toggleVisibility(document.getElementById('middle').contentDocument.getElementById('inner'))"> Inner frame visibility
40 <input type="checkbox" checked="true" onclick="toggleVisibility(document.getElementById('middle').contentDocument.getElementById('inner').contentDocument.getElementById('plugin'))"> Inner plug-in visibility
45 <iframe id="middle" style="height: 400px; width: 400px;" src="resources/nested-plug-ins-outer-frame.html"></iframe>