function createCookie(name,value,days,path) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	} else {
		var expires = "";
	}
	document.cookie = name+"="+value+expires+"; path="+path;
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function getFcaCookieNameForCategory(cat) {
	var cookieName = "fca_rotation";
	var url = document.location.href.toLowerCase();
	var segmentEQ = "segment=";
	var start = url.indexOf(segmentEQ);
	var end = url.indexOf("&", start);

	if (end == -1) {
		return;
	}
	var segment = url.substring(start + segmentEQ.length, end);

	var catEQ = cat + "=";
	start = url.indexOf(catEQ);
	if (start == -1) {
		return null;
	}

	end = url.indexOf("&", start);
	if (end != -1) {
		var catValue = url.substring(start + catEQ.length, end);
	} else {
		var catValue = url.substring(start + catEQ.length, url.length);
	}

	cookieName += "_" + segment + "_" + cat + "_" + catValue;

	//alert("getFcaCookieName cookieName " + cookieName);
	return cookieName;
}

function readFcaCookie(cookieName) {
	return readCookie(cookieName);
}

function updateFcaCookie() {
	var hit_count = 1;
	//alert("updateFcaCookie");
	var cookieName = getFcaCookieNameForCategory("productid");
	if (cookieName == null) {
		cookieName = getFcaCookieNameForCategory("subcatid");
		if (cookieName == null) {
			cookieName = getFcaCookieNameForCategory("catid");
		}
	}

	if (cookieName == null) {
		return null;
	}

	var cookie = readFcaCookie(cookieName);

	if (cookie !=  null) {
		return;
		//hit_count = parseInt(cookie);
		//hit_count++;
	}

	createCookie(cookieName, ""+hit_count, 0, "/");
}