function createCookie(name,value,days) {
	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=/";
}

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 resetComparisonList() {
	eraseCookie('CompareList');
	document.getElementById("ComparisonDiv").innerHTML = '';
	document.getElementById("ComparisonDiv").style.display='none';
}

function addToCompareList(cid) {
	var CompareList = readCookie('CompareList');
	var len=0;
	if (CompareList) {
		var list = CompareList.split(",");
		len = list.length;
		for(var i=0;i < len;i++) {
			if (list[i]==cid) {
				alert("This directory is already in your comparison list!");
				return;
			}
		}
		CompareList = CompareList + "," + cid;
	} else {
		CompareList = cid;
	}
	createCookie('CompareList',CompareList,7);
	
	document.getElementById("ComparisonDiv").innerHTML = '<br /><span class="SideBarTitle">Comparison List</span><br />You have '+(len+1)+' directories in your comparison list. <a href="javascript:;" onclick="resetComparisonList();" class="MemberLinks" style="text-decoration: underline;">Reset List</a>';
	if (len>0) document.getElementById("ComparisonDiv").innerHTML += ' | <a href="/compare.html" class="MemberLinks" style="text-decoration: underline;">Compare</a>';
	document.getElementById("ComparisonDiv").style.display='block';
}