var RmbTracker = function()
{
    this.scripts = [];
    this.index = 0;
};

RmbTracker.prototype.add = function(script)
{
    this.scripts.push(script)
};

RmbTracker.prototype.execute = function()
{   
	if (this.scripts.length == 0) 
    {
        return;
    }

	this.index = 0;
    var ctx = this;

    var _handler = function()
    {
        //alert("Prueba tracker");
        ctx._execute.apply(ctx, arguments);
    };
	
	var oldLoad = window.onload;
	window.onload = function(e) 
	{
		if (typeof oldLoad == "function") {
			oldLoad(e);
		}
		ctx._execute.apply(ctx, arguments);
	}
};

RmbTracker.prototype._execute = function()
{
    if (this.index < this.scripts.length) 
    {
        var script = this.scripts[this.index];
        this.index++;
        if (typeof script == "function") 
        {
            //console.log("Funcion");
            script();
            this._execute();
        }
        else if ((typeof script == "object") && ("url" in script)) 
        {
            this._getScript(script);
        }
    }
    else 
    {
        this.index = -1;
    }
};

RmbTracker.prototype._getScript = function(script)
{
    var scriptNode = document.createElement("script");
    scriptNode.type = "text/javascript";
    scriptNode.src = script.url;
    if ("id" in script) 
    {
        scriptNode.id = script.id;
    }
    var ctx = this;
    var _handler = function()
    {
        //console.log("Cargado: " + scriptNode.src)
        scriptNode.onloadDone = true;
        ctx._execute.apply(ctx, arguments);
    };
    scriptNode.onload = function()
    {
        if (!scriptNode.onloadDone) 
        {
            _handler();
        }
    };
    scriptNode.onreadystatechange = function()
    {
        if (("loaded" === scriptNode.readyState || "complete" === scriptNode.readyState) && !scriptNode.onloadDone) 
        {
            _handler();
        }
    };
    document.body.appendChild(scriptNode);
};