/*** Cookie Utility ***********************************************/
/******************************************************************/

function CookieUtil(name,duration,path,domain,secure){
	this.affix="";
	if(duration){
		var date=new Date();
		var curTime=new Date().getTime();
		date.setTime(curTime+(1000*60*duration));
		this.affix="; expires="+date.toGMTString();
	}
	if(path){
		this.affix+="; path="+path;
	}
	if(domain){
		this.affix+="; domain="+domain;
	}
	if(secure){
		this.affix+="; secure="+secure;
	}
	function getValue(){
		var m=document.cookie.match(new RegExp("("+name+"=[^;]*)(;|$)"));
		return m?m[1]:null;
	}
	this.cookieExists=function(){
		return getValue()?true:false;
	}
	this.expire=function(){
		var date=new Date();
		date.setFullYear(date.getYear()-1);
		document.cookie=name+"=noop; expires="+date.toGMTString();
	}
	this.setSubValue=function(key,value){
		var ck=getValue();
		if(/[;,]/.test(value)){
			//Mac IE doesn't support encodeURI
			value=window.encodeURI?encodeURI(value):escape(value);
		}
		if(value){
			var attrPair="@"+key+value;
			if(ck){
				if(new RegExp("@"+key).test(ck)){
					document.cookie=ck.replace(new RegExp("@"+key+"[^@;]*"),attrPair)+this.affix;
				}else{
					document.cookie =ck.replace(new RegExp("("+name+"=[^;]*)(;|$)"),"$1"+attrPair)+this.affix;
				}
			}else{
				document.cookie =name+"="+attrPair+this.affix;
			}
		}else{
			if(new RegExp("@"+key).test(ck)){
				document.cookie=ck.replace(new RegExp("@"+key+"[^@;]*"),"")+this.affix;
			}
		}
	}
	this.getSubValue=function(key){
		var ck=getValue();
		if(ck){
			var m=ck.match(new RegExp("@"+key+"([^@;]*)"));
			if(m){
				var value=m[1];
				if(value){
					//Mac IE doesn't support decodeURI
					return window.decodeURI?decodeURI(value):unescape(value);
				}
			}
		}
	}
}