function SetCookie() {
if(arguments.length < 2) { return; }
var n = arguments[0];
var v = arguments[1];
var d = 0;
if(arguments.length > 2) { d = parseInt(arguments[2]); }
var exp = '';
if(d > 0) {
	var now = new Date();
	then = now.getTime() + (d * 24 * 60 * 60 * 1000);
	now.setTime(then);
	exp = '; expires=' + now.toGMTString();
	}
document.cookie = n + "=" + escape(String(v)) + '; path=/' + exp;
} // function SetCookie()

function ReadCookie(n) {
var cookiecontent = new String();
if(document.cookie.length > 0) {
	var cookiename = n+ '=';
	var cookiebegin = document.cookie.indexOf(cookiename);
	var cookieend = 0;
	if(cookiebegin > -1) {
		cookiebegin += cookiename.length;
		cookieend = document.cookie.indexOf(";",cookiebegin);
		if(cookieend < cookiebegin) { cookieend = document.cookie.length; }
		cookiecontent = document.cookie.substring(cookiebegin,cookieend);
		}
	}
return unescape(cookiecontent);
} 



images = new Array(4);

images[0] = "<a href = 'http://www.monstersupplements.com'><img src='http://www.fitforum.co.uk/images/ads/Monster.gif' border='0' ></a>";

images[1] = "<a href = 'http://www.scitecnutrition.co.uk'><img src='http://www.fitforum.co.uk/images/ads/scitec.jpg' border='0' ></a>";

images[2] = "<a href = 'http://monstersupplements.com/store/type_list-10000210-asc-long_name-lang-1.html'><img src='http://www.fitforum.co.uk/images/ads/MST.JPG' border='0' ></a>";

images[3] = "<a href = 'http://www.myprotein.com/uk/products/hurricane_xs?utm_source=Fitforum&utm_medium=Forum&utm_campaign=847'><img src='http://www.fitforum.co.uk/images/ads/myprotein.jpg' border='0' ></a>";



if(ReadCookie('fitforum_banner')){

		var number = ReadCookie('fitforum_banner');
		if (parseInt(number) >= images.length-1){document.write(images[0]); SetCookie('fitforum_banner',0,1);}
		else{
		var index = 0;
		if(number.length == 0) { index = 1; }
		else { index = parseInt(number) + 1; }
		document.write(images[index]);
		SetCookie('fitforum_banner',index,1);
		}

}
else{
index = Math.floor(Math.random() * images.length);

document.write(images[index]);

SetCookie('fitforum_banner',index,1);

}