var sys = (function() {

    var private_var;

    function private_method()
    {
        // coming soon!
    }

    return {
        typeOf: function(object,type){
            if (type == null) {
                switch (typeof object) {
                    case 'undefined':
                        return 'undefined';
                        break;
                    case 'object':
                        return 'object';
                        break;
                    case 'boolean':
                        return 'boolean';
                        break;
                    case 'number':
                        return 'number';
                        break;
                    case 'string':
                        return 'string';
                        break;
                    default:
                        return 'error';
                }
            }
            else {
                if(typeof object == type){
                    return true;
                }else{
                    return false;
                }

            }
        },
        testXMLHttpRequest: function(){
            var xhr;
            try {
                xhr = new ActiveXObject('Msxml2.XMLHTTP');
            }catch (err2) {
                try {
                    xhr = new ActiveXObject('Microsoft.XMLHTTP');
                }catch (err3) {
                    try {
                        xhr = new XMLHttpRequest();
                    }
                    catch (err1)
                    {
                        return false;
                    }
                }
            }
            return xhr;
        },
        json : {
            string : function(obj){
                try {
                    var newObj = JSON.parse(obj);
                    return newObj;
                }catch(e){
                    return false;
                }
            },
            object : function(obj){
                try {
                    var newObj = JSON.stringify(obj);
                    return newObj;
                }catch(e){
                    //will not return false.
                    return false;
                }
            }
        },
        ajax : function(options){

            if(this.typeOf(options) == 'object'){

                if(options.type == null || options.type == ''){
                    return false
                }else if(options.url == null || options.url == ''){
                    return false;
                }else{

                    if(options.async == 'undefined'){
                        options.async = false;
                    }

                    var xhr = new this.testXMLHttpRequest();

                    if(options.type == 'post' || options.type == 'POST'){

                        if(this.typeOf(options.data) == 'object'){
                            console.log(options.data);
                            options.data = this.objString(options.data);
                            console.log(options.data);
                        }

                        xhr.open(options.type, options.url, options.async);
                        xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                        xhr.send(options.data);
                    }else{
                        xhr.open(options.type, options.link, options.async);
                        xhr.send(null);
                    }
                    return xhr.responseText;
                }
            }else{
                return false;
            }
        },
        objString: function(obj){
            var string = 'start=true';
            for(var data in obj) {
                string = string + '&' + data + '=' + obj[data];
            }
            string = string + '&end=true';
            return string;
        }
    };
})();