Tab Title shown as External Page in Console

<apex:includeScript value="/support/console/20.0/integration.js"/>
<script type="text/javascript">
	function testSetTabTitle() {
		//Set the current tab's title
		sforce.console.setTabTitle('Account: {!Account.Name}');
	}
	var pageLoad = window.onload;
	window.onload = function() {
		testSetTabTitle();
	}
</script>