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 isCDVersion() {
	if(!document || !document.isycat)
		return false;

	var formUrl = document.isycat.action;
	var bCd = formUrl.indexOf("http://localhost") == 0 ||
			formUrl.indexOf("http://127.0.0.1") == 0;
	return bCd;
}


function updateExtraUsercodes()
{
	var name = "extra_usercodes";
	var obj = docEl("*.extra_usercodes");
	if(!obj)
		return;
	
	if(obj.value) {
		if(obj.value == "delete")
			eraseCookie(name);
		else
			createCookie(name, obj.value, 180);
	}
	else {
		var val = readCookie(name);
		if(val)
			obj.value = val;
		else
			obj.value = "";
	}
}


function updateCookie()
{
	updateExtraUsercodes();
	
	if(isCDVersion())
		return;

	var name = "usercodes";
	var obj = docEl("*.usercodes");
	if(!obj)
		return;
	
	if(obj.value) {
		if(obj.value == "delete")
			eraseCookie(name);
		else
			createCookie(name, obj.value, 180);
	}
	else {
		var val = readCookie(name);
		if(val)
			obj.value = val;
		else
			obj.value = "";
	}
}