sb.ajax.prototype.fetch

@Description: Sends any data specified to the external server side file specified in your instances .url property and returns the data recieved to the instance's onResponse method
@File: sb.js
@Type: function
@Example:

var myAjax = new sb.ajax({
        url : 'process.php'
    });

    //fetches the data from the url specified in the constructor
    myAjax.fetch();