jquery ajax for live chat

[keyboard]

Hello everyone,

EDIT -

I would like some jQuery code that connects to a page (ajax) {and sends some info}, then returns whatever is echoed and assigns it to the innerHTML of the div with the id usermsg.
I need it to automatically do this every 2.5 seconds.

Thanks, Keyboard1333

[keyboard]

Ah ha!

Fixed it -

 $(document).ready(function() {
 	 $("#chatBox").load("update.php");
   var refreshId = setInterval(function() {
      $("#chatBox").load('update.php');
   }, 1000);
   $.ajaxSetup({ cache: false });
});