function AdvertObj(url, bannerurl, alt, width, height) {
	this.url = url;
	this.banner = bannerurl;
	this.alt = alt;
	this.width = width;
	this.height = height;
}

function AdvertManager() {
	this.advertsArray = new Array();
}

function AdvertManager_newAdvert(url, bannerurl, alt, width, height) {
	this.advertsArray.push(new AdvertObj(url, bannerurl, alt, width, height));
}
AdvertManager.prototype.newAdvert = AdvertManager_newAdvert;

function AdvertManager_displayAdvert() {
	if (this.advertsArray.length < 1) return;
	var chosenAd = this.advertsArray[new Date().getSeconds() % this.advertsArray.length];
	document.write("<center><a href=\"" +chosenAd.url +"\" target=\"_blank\"><img src=\"" +chosenAd.banner +"\" width=\"" +chosenAd.width +"\" height=\"" +chosenAd.height +"\" alt=\"" +chosenAd.alt +"\" border=\"0\"></a></center>");
}
AdvertManager.prototype.displayAdvert = AdvertManager_displayAdvert;