function setVideoNavigationTab(element) {

	var videoList;
	var listItemsCount;
	
	videoList = document.getElementById("videoList");
	listItemsCount = videoList.childNodes.length;

	for (var i = 0; i < listItemsCount; i++) {
			
		if (videoList.childNodes[i].tagName == 'LI') {
		
			videoList.childNodes[i].className = '';
		}
	}
	
	element.parentNode.className = 'selectedVideoNavigationTab';
}