LayoutTests/fast/forms/listbox-clear-restore.html - WebKit - Git at Google

 <!DOCTYPE>
 <html>
 <body onload="test()">
 <select id="myList" size="10" multiple></select>
 <script>
 function populateList()
 {
     var myList = document.getElementById("myList");
     var item;

     for (var ii = 0; ii < 20; ii++) {
         item = document.createElement("option");
         item.value = ii;
         item.appendChild(document.createTextNode("Item #" + ii));
         myList.appendChild(item);
     }
 }

 function clearList()
 {
     var myList = document.getElementById("myList");
     var items = myList.getElementsByTagName("option");

     for (var ii = items.length-1; ii >= 0; ii--) {
         myList.removeChild(items[ii]);
     }
 }

 function test()
 {
     if (window.testRunner)
         testRunner.waitUntilDone();

     populateList();
     document.getElementById("myList").selectedIndex = 19;
     document.body.offsetWidth; // Force a layout.
     clearList();
     document.body.offsetWidth; // Force a layout.
     populateList();

     if (window.testRunner)
         testRunner.notifyDone();
 }
 </script>
 </body>
 </html>
	<!DOCTYPE>
	<html>
	<body onload="test()">
	<select id="myList" size="10" multiple></select>
	<script>
	function populateList()
	{
	var myList = document.getElementById("myList");
	var item;

	for (var ii = 0; ii < 20; ii++) {
	item = document.createElement("option");
	item.value = ii;
	item.appendChild(document.createTextNode("Item #" + ii));
	myList.appendChild(item);
	}
	}

	function clearList()
	{
	var myList = document.getElementById("myList");
	var items = myList.getElementsByTagName("option");

	for (var ii = items.length-1; ii >= 0; ii--) {
	myList.removeChild(items[ii]);
	}
	}

	function test()
	{
	if (window.testRunner)
	testRunner.waitUntilDone();

	populateList();
	document.getElementById("myList").selectedIndex = 19;
	document.body.offsetWidth; // Force a layout.
	clearList();
	document.body.offsetWidth; // Force a layout.
	populateList();

	if (window.testRunner)
	testRunner.notifyDone();
	}
	</script>
	</body>
	</html>