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 && YAHOO) {
			var compare_boxes = YAHOO.util.Dom.getElementsByClassName('compare_box','input');
			if (compare_boxes) {
				for (cb in compare_boxes) {
					compare_boxes[cb].checked = false;
					//alert(compare_boxes[cb].value);
					for (ci in cookie_ids) {
						if (cookie_ids[ci] == compare_boxes[cb].value) {
							compare_boxes[cb].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) {
				var new_cookie_ids = '';
				found_item_id = false;
				for (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 (YAHOO) {
					var compare_links = YAHOO.util.Dom.getElementsByClassName('compare_items_link', 'a');
					if (compare_links) {
						var newurl = "/compare";
						if (YAHOO.compare && YAHOO.compare.pathstring != '') {
							newurl = newurl + "_path_" + YAHOO.compare.pathstring;
						}
						newurl = newurl + ".html?statvar=usedCompare%3Dclicked&items=" + new_cookie_ids;
						for (cli in compare_links) {
							//compare_links[cli].href = "/compare.html?statvar=usedCompare%3Dclicked&items=" + new_cookie_ids;
							compare_links[cli].href = newurl;
						}
					}
					updateCompareBoxes();
				}
			} else {
				eraseCookie('compareIDs');
				updateCompare(item_id);
			}
		} else {
			createCookie('compareIDs',item_id+"|",7);
		}
		if (refresh && refresh == true) {
			var newurl = "/compare";
			if (YAHOO.compare && YAHOO.compare.pathstring != '') {
				newurl = newurl + "_path_" + YAHOO.compare.pathstring;
			}
			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;
			}
		}
	}

}