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 = "";
	}
	var domaindomain = document.domain.replace(/www./,'.');
	var thedomain = "; domain="+domaindomain;
	document.cookie = name+"="+value+thedomain+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 clearCompare()
{
	eraseCookie('compareIDs');
	location.href = "/compare.html?clearall";
}
function updateCompareBoxes() {
	var current_cookie_value = readCookie('compareIDs');
	if (current_cookie_value)
	{
		var current_cookie_value = current_cookie_value.replace(/%7C/g,'|');
		var cookie_ids = current_cookie_value.split('|');
		if (cookie_ids && jQuery)
		{
			
			var compare_boxes = $('input.compare_box').attr('checked', false);
			
			for (var ci in cookie_ids)
			{
				compare_boxes.filter('[value="'+ cookie_ids[ci] +'"]')
					.attr('checked', true)
			}
			
		}	
	}
}

function updateCompare(item_id, refresh)
{
	if (item_id && parseInt(item_id) > 0) {
		var current_cookie_value = readCookie('compareIDs');
		var new_cookie_ids = '';
		if (current_cookie_value)
		{
			var current_cookie_value = current_cookie_value.replace(/%7C/g,'|');
			var cookie_ids = current_cookie_value.split('|');
			if (cookie_ids)
			{
				new_cookie_ids = '';
				var found_item_id = false;
				for (var cc in cookie_ids)
				{
					if (cookie_ids[cc] != '')
					{
						if (cookie_ids[cc] != item_id) {
							new_cookie_ids = new_cookie_ids + cookie_ids[cc] + "|";
						} else {
							found_item_id = true;
						}	
					}	
				}
				if (found_item_id == false)
				{
					new_cookie_ids = new_cookie_ids + item_id + "|";
				}
				eraseCookie('compareIDs');
				createCookie('compareIDs',new_cookie_ids,7);
				if (typeof jQuery !== 'undefined')
				{
					var compare_links = $('a.compare_items_link');
					if (compare_links.size())
					{
						var newurl = "/compare";
						if (scSite.itemCompare.path != '')
						{
							newurl += "_path_" + scSite.itemCompare.path;
						}
						newurl += ".html?statvar=usedCompare%3Dclicked&items=" + new_cookie_ids;
						compare_links.attr('href', newurl);
					}
					updateCompareBoxes();
				}
			}
			else
			{
				eraseCookie('compareIDs');
				updateCompare(item_id);
			}
		}
		else
		{
			createCookie('compareIDs',item_id+"|",7);
		}
		if (refresh && refresh == true)
		{
			var newurl = "/compare";
			if (scSite.itemCompare.path != '')
			{
				newurl += "_path_" + scSite.itemCompare.path;
			}
			if (new_cookie_ids && new_cookie_ids != '')
			{
				location.href = newurl + ".html?delete="+item_id+"&items="+new_cookie_ids;
			} 
			else
			{
				location.href = newurl + ".html?delete="+item_id;
			}
		}
	}
}