Ajax call with multiple data

Ajax call with multiple data

I have this ajax call and I need to add multiple data.
function sssssss(page){
loading_show();
var form2 = document.myform2;
var dataString1 = $(form2).serialize();
$.ajax
({
type: "GET",
url: "load_data.php",
data: "page="+page,
success: function(msg)
{
$("#container").ajaxComplete(function(event,
request, settings)
{
loading_hide();
$("#container").html(msg);
});
}
});
}
Now in
data: "page="+page, // I want to add "dataString1"
I would like to add var dataString1.
Any help?