[jQuery] accessing 2d array

[Umshanks]

Hi ,
I have just started writing php code. One of my friends suggested I
use jQuery framework. I am using the jQuery.get( url, data, callback )
as:

$.get("../../trial1.php", {checkID: checkBoxID, radioID:
radioButtonID, sDate: startDate, eDate: endDate},
                function(data, data1){
                        alert("Data Loaded: " + data);
}

and what the php returns is a 2-d array.

I would like to know if its possible to receive a 2d array and how I
can access it.

Any information would be appreciated.

Thank you
Umshanks