// JavaScript Document
function changePreview(tabNumber) {
	for (i = 1; i <= 4; i++) {
		document.getElementById('info' + i).style.display = 'none';
		}
	document.getElementById('info' + tabNumber).style.display = '';
	lis = document.getElementById('cMenu').getElementsByTagName('li');
	for(i = 0; i < lis.length; i++) {
		if (lis[i].className == 'active')
			lis[i].className = 'menu';
		}
	document.getElementById('cmItem' + tabNumber).className = 'active';
	}