var exp = new Date();
exp.setTime(exp.getTime() + (1000 * 60 * 60 * 24 * 90));
var win;

function getCookie(name) {
	var cname = name + "=";
	var dc = document.cookie;
	if(dc.length > 0) {
		begin = dc.indexOf(cname);
		if(begin != -1) {
			begin += cname.length;
			end = dc.indexOf(";", begin);
			if(end == -1) end = dc.length;
			return unescape(dc.substring(begin, end));
		}
	}
	return null;
}

function setCookie(name, value, expires) {
	document.cookie = name + "=" + escape(value) + ";path=/" + ((expires == null ? "" : ";expires=" + expires.toGMTString()));
}

function delCookie(name) {
	document.cookie = name + "=;expires=Thu, 01-Jan-00 00:00:01 GMT" + "; path=/";
}

function launchAdvert(name, url, properties) {
	if(getCookie(name) == null || getCookie(name) == "show") {
		setCookie(name, "show", exp);
		win = window.open(url, "seminar1", properties);
		win.focus();

	} else {
		setCookie(name, "noshow", exp);
	}
}


function toggleShow() {
	if(getCookie(name) == "show")
		setCookie(name, "noshow", exp);
	else setCookie(name, "show", exp);
		win.close();
}


function noShowLink() {
	if(getCookie(name) == null || getCookie(name) == "show") {
		document.write('<A HREF="#" onClick="toggleShow()">close seminar 1 and do not show it again</A>');
	}
}