/**
 * cookies 辅助
 */
var cookiehelper = {
    // 获取过期时间
    _getexpiretime:function(keep){
        var date = new date();
        if (!keep)
        {
            keep = 7 * 24 * 3600 * 1000;
        }
        date.settime(date.gettime() + keep);
        var expiretime = date.togmtstring();
        return expiretime;
    },
    // 写入 cookies
    write:function(key,content,keep){
        return document.cookie = key + "=" + escape(content) + "; expires=" + this._getexpiretime(keep) +"; path=/";
    },
    // 读取 cookies
    read : function(key){
        var cookies = document.cookie.split("; ");
        var value = null;
        for (var i=0;i<cookies.length;i++)
        {
            var acrumb = cookies[i].split("=");
            if (key == acrumb[0])
            {
                value = unescape(acrumb[1]);
            }
        }
        return value;
    },// 读取 cookies
    readlist : function(prefix){
        var cookies = document.cookie.split("; ");
        var valuelist = new array();
        for (var i=0;i<cookies.length;i++)
        {
            var acrumb = cookies[i].split("=");
            if (acrumb[0].indexof(prefix, 0) == 0)
            {
                valuelist.push([acrumb[0].substr(prefix.length),unescape(acrumb[1])]);
            }
        }
        return valuelist;
    },
    dellist : function(prefix){
        var cookies = document.cookie.split("; ");
        var valuelist = new array();
        for (var i=0;i<cookies.length;i++)
        {
            var acrumb = cookies[i].split("=");
            if (acrumb[0].indexof(prefix, 0) == 0)
            {
                this.del(acrumb[0]);
            }
        }
        return valuelist;
    },
    // 删除 cookies
    del : function(key){
        return document.cookie = key + "=" + escape("del") + "; expires=" + this._getexpiretime(-500) + "; path=/";
    },
    delall:function(keyprefix){
        var keylist = this.read(keyprefix,true);
        for(var i=0;i<keylist.length;i++)
        {
            this.del(keyprefix+"_"+keylist[i][0]);
        }
    }
}
/**
 *
 */
var quoteprice = {
    _fieldname : "quotepirceitem_",
    additem :function(id,content,keep) {
        if (new regexp("^[0-9]+$").test(id)){
            cookiehelper.write(this._fieldname + id, content, keep);
        }
    },
    delitem :function(id ) {
        cookiehelper.del(this._fieldname + id);
    },
    delallitem :function() {
        return cookiehelper.dellist(this._fieldname);
    },
    hasitem :function(id ) {
        return cookiehelper.read(this._fieldname + id) != null;
    },
    allitem :function() {
        return cookiehelper.readlist(this._fieldname);
    }
}