require.register('common/urlbuilder', function(module, exports, require) {
  module.exports = function(url){
    this.orginurl = url;
    this.baseurl = url;
    this.checked = false;
    this.addKV=function(key, value){
        if(typeof(value) == 'undefined'){
            return this;
        }
        this._checkurl();
        var str = encodeURIComponent(key) + '=' + encodeURIComponent(value);
        this.baseurl += str;
        return this;
    };

    this.clear=function(){
        this.baseurl = this.orginurl;
        this.checked = false;
    };

    this._checkurl=function(){
        if(!this.checked){
            if(this.baseurl.indexOf("?") == -1){
                this.baseurl += "?";
            }else{
                this.baseurl += "&";
            }
            this.checked = true;
        }else{
            this.baseurl += "&";
        }

    };
};
});