/* *******************************************************************************
***	FILE:	cnb_cookies.php
*********************************************************************************/
function clearAllLocalData(){
	window.localStorage.clear();
}
function clearAllSessionData(){
	window.sessionStorage.clear();
}
/* **********************************************************
***	FUNCTION:	cookieClear											*
***	DESCRIPTION:	clears a named cookie						*
***	Parameters:															*
***		name = name of cookie										*
***	SRC:	http://www.quirksmode.org/js/cookies.html			*
*********************************************************** */
function cookieClear(name){
	cookieSet(name,"",-1);
}
/* **********************************************************
***	FUNCTION:	cookieGet											*
***	DESCRIPTION:	returns the value of a named cookie		*
***						or null on failure							*
***	Parameters:															*
***		name = name of cookie										*
***	SRC:	http://www.quirksmode.org/js/cookies.html			*
*********************************************************** */
function cookieGet(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 unescape(c.substring(nameEQ.length,c.length));
	}
	return null;
}
/* **********************************************************
***	FUNCTION:	cookieSet											*
***	DESCRIPTION:	writes a named cookie						*
***	Parameters:															*
***		name = name of cookie										*
***		value = value to write to cookie							*
***		days = number of days before cookie expires			*
***	SRC:	http://www.quirksmode.org/js/cookies.html			*
*********************************************************** */
function cookieSet(name,value,days){
	value=escape(value);
	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:	cookieUnset											*
***	DESCRIPTION:	clears a named cookie						*
***	Parameters:															*
***		name = name of cookie										*
***	SRC:	http://www.quirksmode.org/js/cookies.html			*
*********************************************************** */
function cookieUnset(name){
	cookieSet(name,"",-1);
}
function deleteLocalData(n){
	var storage=window.localStorage;
	storage.removeItem(n);
}
function deleteSessData(n){
	var storage=window.sessionStorage;
	storage.removeItem(n);
}
function getLocalData(n){
	var storage=window.localStorage;
	return storage.getItem(n);
}
function getLocalSpace(){
	var storage=window.localStorage;
	//return storage.remainingSpace;
	var rslt=storage.remainingSpace;
	if(rslt==null){
		rslt=4999999; //firefox is limited only by RAM (c.f.http://code.google.com/p/sessionstorage/, so set to below 5Mb to simulate IE8)
	}
	return rslt;
}
function getSessData(n){
	var storage=window.sessionStorage;
	return storage.getItem(n);
}
function getSessSpace(){
	var storage=window.sessionStorage;
	var rslt=storage.remainingSpace;
	if(rslt==null){
		rslt=4999999; //firefox is limited only by RAM (c.f.http://code.google.com/p/sessionstorage/, so set to below 5Mb to simulate IE8)
	}
	return rslt;
}
function setLocalData(n,v){
	var lng=v.length+41;
	var aLng=getLocalSpace();
	if(lng<aLng){
		var storage=window.localStorage;
		storage.setItem(n,v);
	}
}
function setSessData(n,v){
	var lng=v.length+41;
	var aLng=getSessSpace();
	if(lng<aLng){
		var storage=window.sessionStorage;
		storage.setItem(n,v);
	}
}
function setLastAccessed(){
	//var lastAccessed=getLocalData('lastAccessed');
	//if(lastAccessed=='undefined'){
	//	var ts=get_ts();
		setLocalData('lastAccessed',ts);
	//}else{
		
	//}
}
/***************************************
***	FUNCTION:								*
***	DESC:										*
***	ARGUMENTS:								*
***		ky=data cache id					*
***************************************/
function clearCSCache(ky){
	//clear cookie
	cookieClear(ky)
	//clear local storage
	deleteLocalData(ky)
	//clear session data
	deleteSessData(ky)
}
/* *************************************
*** FUNCTION: getCSCache					*
*** ARGUMENTS:									*
***	di = data id							*
***	[sa] = storage area [optional]:	*
***		0 = no storage (unused)			*
***		1 = sessionStorage				*
***		2 = localStorage					*
***		4 = cookie							*
***		8 = 									*
*** therefore to set an item in all		*
***	storage locations(sessionStorage,*
***	localStorage, & cookie) the sa	*
***	should be 7								*
*** CSCache: CNB Data Cache				*
***************************************/
function getCSCache(di){
	var NumArgs=arguments.length;
	sa=NumArgs>1?arguments[1]:7;
	sa=sa>7?7:sa; //GET BIT COMPARISON VALUES
	//will check sessionStorage, localStorage, then cookies unless the sa is specified
	//check session first
	if(sa&1){
		//alert('checking session');
		var rslt=getSessData(di);
		if(rslt!=null){
		//	alert("Session Results:"+rslt);
			return rslt;
		}
	}
	if(sa&2){ //check local storage
		//alert('checking local storage');
		var rslt=getLocalData(di);
		if(rslt!=null){
		//	alert("Local Storage Results:"+rslt);
			return rslt;
		}
	}
	if(sa&4){ //check client-side cookie
		//alert('checking cookies');
		var rslt=cookieGet(di);
		if(rslt!=null){
		//	alert("Cookie Results:"+rslt);
			return rslt;
		}
	}
	return null;
}
/* *************************************
*** FUNCTION: setCSCache					*
*** ARGUMENTS:									*
***	ky = key									*
***	val = value								*
***	[sa] = storage area:					*
***		0 = no storage (unused)			*
***		1 = sessionStorage				*
***		2 = localStorage					*
***		4 = cookie							*
***		8 = 									*
*** therefore to set an item in all		*
***	storage locations(sessionStorage,*
***	localStorage, & cookie) the sa	*
***	should be 7								*
***************************************/
function setCSCache(ky,val){
	var NumArgs=arguments.length;
	sa=NumArgs>2?arguments[2]:7;
	sa=sa>7?7:sa;
	if(sa&1){ //set session first	
		//alert('setting session storage');
		setSessData(ky,val);
	}
	if(sa&2){ //set local storage
		//alert('setting local storage');
		setLocalData(ky,val);
	}
	if(sa&4){ //set client-side cookie
		//alert('setting cookie');
		if(val.length<8000){
			cookieSet(ky,val,30);
		}
	}
}
//cf. C:\Server\www\cyphersystems.dev\public_html\cloud\js\ie8\cnb_hml.php for usage