function cookieManager(){ this.lifeTime=1; this.path=""; }
cookieManager.prototype={
	getCookie:function(c){ 
		if (document.cookie.length>0){ 
			begin = document.cookie.indexOf(c+"=");
			if (begin != -1){ 
				begin += c.length+1;
				end = document.cookie.indexOf(";", begin);
				if (end == -1) end = document.cookie.length;
				return unescape(document.cookie.substring(begin, end)); }
		}
		return null;
	},
	setCookie:function(c,v){ 
		var ExpireDate = new Date();
		ExpireDate.setTime(ExpireDate.getTime()+(this.lifeTime*24*3600*1000));
		document.cookie=c+"="+escape(v)+((this.lifeTime==null)?"":";expires="+ExpireDate.toGMTString())+((this.path.length==0)?"":";path="+this.path);
	},
	delCookie:function(c){if (getCookie(c)) {document.cookie = c + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";}}
}