var objCookie = {
	getObjProperties: function(obj)
	{
		var val = "";
		var c= "";
		
		//we need to know if the obj is an array
		if( obj instanceof Array )
			val = "[";
		else val = "{";		
		
		for( var prop in obj )
		{
			//we need to ignore functions
			if( typeof(obj[prop]) == 'function' )
				continue;
			if( val != "" && val != "[" && val != "{" ) val += ',';
			if( typeof(obj[prop]) == "object" )
			{
				val += prop + ":";
				val += this.getObjProperties(obj[prop]);
			}
			else
			{
				val += prop + ":" + encodeURIComponent(obj[prop]);
			}
		}
		
		if( obj instanceof Array )
			val += "]";
		else val += "}";
		return val;		
	} ,	
	
	prepareCookiesForSave: function(str)
	{
		var strArr = new Array();
		var tmpStr = str;
		var tmp;
		while( tmpStr.length >= 4092 )
		{
			tmp = tmpStr.substring(4091);
			tmpStr = tmpStr.substring(0,4091);
			strArr.push(tmpStr);
			tmpStr = tmp;
		}
		strArr.push(tmpStr);
		return strArr;
	},
	
	isBrowser: function( browsers )
	{
		var index = 0;
		var nav = navigator.userAgent;
		
		for(var i=0;i<browsers.length;i++)
		{
			var browser = browsers[i].name;
			var ver = browsers[i].ver;
			switch(browser)
			{
				case 'IE': 	
					index = nav.indexOf("MSIE");
					if( index != -1 )
					{
						var bVer = parseInt(nav.charAt(index+5));
						alert("Found: MSIE Ver="+bVer);
						if( ver == bVer ) return true;
					}
					break;
			}
		}
		return false;
	}, 
	
	
	
	save: function( name, obj, expireDays, path, domain )
	{
		var val = this.getJSONFromObj(obj);
		
		var cookies = this.prepareCookiesForSave(val);
		
		if( cookies.length > 1) //it means that we need more than one cookie to save the object. 
		{
			if( this.isBrowser([{name:"IE",ver:6}]) ) return "Error: Object exceed cookie limit";
		}
		
		for( var i=0;i<cookies.length;i++)
		{
			var cookie = 
				(i>0?("__"+i):"") + 
				name + 
				"=" +
				cookies[i];
			
			if( expireDays )
			{
				cookie += "; max-age=" + (expireDays*60*60*24);
			}
			if( path ) cookie += "; path="+path;
			if( domain )  cookie += "; domain="+domain;

			document.cookie = cookie;	
		}	
	}, 
	
	getJSONFromObj: function( obj )
	{
		var val = "";
		if( typeof(obj) == "string" ||
			typeof(obj) == "number" ||
			typeof(obj) == "boolean" )
		{
			val = ""+obj;
		}
		else
		{					
			val = this.getObjProperties(obj);
		}
		return val;		
	} ,
	
	
	setValue: function(obj,key,val,debug)
	{
		if(isNaN(parseFloat(key)) || parseInt(key) == parseFloat(key) )
		{
			if( val == undefined )
				return isNaN(parseFloat(key))?key:parseFloat(key);
			obj[key] = val;
		}
		else
		{
			if( val == undefined )
				return parseFloat(key);
			obj[parseInt(key)] = val;
		}
	},
	
	populateObj: function(cookie)
	{
		var obj = null;
		var key = "";
		var val = "";
		var objArray = new Array();
		var isKey = true;		
		
		for( var i=0;i<cookie.length;i++)
		{
			if(cookie.charAt(i) == "{" ) 
			{
				var obj1 = new Object();
				if( obj == null ) obj = obj1;
				else (objArray[objArray.length-1])[key] = obj1;
				objArray.push(obj1);
				isKey = true;
				key = "";
				val = "";
			}
			else if( cookie.charAt(i) == "[" )
			{
				var obj1 = new Array();
				if( obj == null ) obj = obj1;
				else (objArray[objArray.length-1])[key] = obj1;
				objArray.push(obj1);
				isKey = true;
				key = "";
				val = "";
			}
			else if( cookie.charAt(i) == ":" )
			{
				isKey = false;
			}	
			else if( cookie.charAt(i) == "," )
			{
				if( key != "" )
					this.setValue(objArray[objArray.length-1],key,decodeURIComponent(val),"144");
				key="";
				val="";
				isKey = true;
			}	
			else if( cookie.charAt(i) == "]" )
			{
				this.setValue(objArray[objArray.length-1],key,decodeURIComponent(val),"151");
				key="";
				val="";
				isKey = true;
				objArray.pop();
				
			}	
			else if( cookie.charAt(i) == "}" )
			{
				this.setValue(objArray[objArray.length-1],key,decodeURIComponent(val),"160");
				key="";
				val="";
				isKey = true;
				objArray.pop();
			}
			else if( isKey )
			{
				key += cookie.charAt(i);
			}
			else val += cookie.charAt(i);
		}
		if( obj == null && key != "" )
		{
			obj = this.setValue(obj,key,undefined,"174");
		}
		return obj;
	},
	

	remove: function(name)
	{
		var cookie = name + "=0";		
		cookie += "; max-age=0";
		document.cookie = cookie;
		//TODO: clear all cookie parts: __x<cookie name> created by long cookies.
	},
	
	load: function(name)
	{
		var obj = null;		
		var cookie = this.getCookieByName(name);
		if( cookie != "" )
		{
			for( var i=1;i<1000;i++)
			{
				var partName = "__"+i+name;
				var cookiePart = this.getCookieByName(partName);
				if( cookiePart == "" ) break;
				cookie += cookiePart;
			}
			obj = this.populateObj(cookie );
		}		
		return obj;
	},
	
	getCookieByName: function(name)
	{
		var allCookies = document.cookie;
		if( allCookies == "" ) return ""; 
		var cookies = allCookies.split(';');
		var cookie = null;
		for( var i=0; i< cookies.length;i++)
		{
			cookie = cookies[i];
			//some browsers put a space after the semicolon
			if( cookie.charAt(0) == " " ) cookie = cookie.substring(1);
			if( cookie.substring(0,name.length+1) == (name+"=")) break;
		}
		
		if( i >= cookies.length ) return "";
		
		return cookie.substring(name.length+1);		
	}
};