// JavaScript Document
function changePreview(Object) {
	document.getElementById('ContentAds').style.display = 'none';
	document.getElementById('ContentYouTube').style.display = 'none';
	document.getElementById('ContentVideoKu').style.display = 'none';
	document.getElementById('Content' + Object).style.display = '';
	tds = document.getElementById('Content').getElementsByTagName('TD');
}