<!DOCTYPE html>
<html>
<head>
<style>
#test1 { -webkit-column-count: 2; }
#test4 { -webkit-column-span: all; }
</style>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

window.onload = function() {
	test1 = document.createElement('div');
	test1.setAttribute('id', 'test1');
	document.body.appendChild(test1); 
	test2 = document.createElement('div');
	test3 = document.createElement('div');
	test1.appendChild(test2);
	test1.appendChild(test3);
	test4 = document.createElement('div'); 
	test4.setAttribute('id', 'test4');
	test1.appendChild(test4);
	test4.style.display = 'table-footer-group';
	document.body.offsetTop
	test3.style.display = 'table-row';
	document.body.offsetTop;
	test3.style.display = 'table-column-group';
	document.body.offsetTop;
	test3.style.display = 'table-row';
	document.body.offsetTop;
	test2.style.display = 'inline';
}
</script>
</head>
<body>
Test passes if it does not crash.
</body>
</html>