You can take a look at this if it suits your needs: http://datatables.net/examples/basic_init/scroll_y_infinite.html
Even if you're not familiar with datatables, it may intrigue you to use it, as for to implement this infinite scroll on a table you just have to add this jQuery code:
$(document).ready(function() {
$('#example').dataTable( {
"bScrollInfinite": true,
"bScrollCollapse": true,
"sScrollY": "200px"
} );
} );
to the populated table in the html (They have 4 ways to do that).
Anyay, IMO, worth checking out.
edit: As @SpoiledTechie.com says below in the comment - this info is outdate and you should look into the way they support that now: http://datatables.net/upgrade/1.10#bScrollInfinite