/*
content promotion script v. 1.2 (04.11.2009)
created by vadim bezborodko
e-mail: vadim@bezborodko.ru
*/
function promotion(id) {
	try {
		var promotion_links, promotion_body, promotion, promotionarray, promotion_linksarray;
		if (promotion_links = document.getElementById('promotion_links')) {
			if (promotion_body = document.getElementById('promotion_body')) {
				if (promotion = document.getElementById('promotion')) {
					if (promotionarray = promotion.getElementsByTagName('div')) {
						if (!id) {
							var id = Math.round(Math.random() * (promotionarray.length - 1));
							promotion_body.innerHTML = promotionarray[id].innerHTML;
							if (promotion_linksarray = promotion_links.getElementsByTagName('a')) {
								for (var i = 0; i < promotion_linksarray.length; i++) {
									if (i == id) {
										promotion_linksarray[i].className = 'close';
									}
									else {
										promotion_linksarray[i].className = 'open';
									}
								}
							}
						}
						else {
							promotion_body.innerHTML = promotionarray[id - 1].innerHTML;
							if (promotion_linksarray = promotion_links.getElementsByTagName('a')) {
								for (var i = 0; i < promotion_linksarray.length; i++) {
									if (i == id - 1) {
										promotion_linksarray[i].className = 'close';
									}
									else {
										promotion_linksarray[i].className = 'open';
									}
								}
							}
						}
					}
				}
			}
		}
	}
	catch (error) {
		alert(error.description);
		return false;
	}
}