You can use the Core/index function in a given context, for example you can check the index of the TD in it's parent TR to get the column number, and you can check the TR index on the Table, to get the row number:
$('td').click(function(){
var col = $(this).parent().children().index($(this));
var row = $(this).parent().parent().children().index($(this).parent());
alert('Row: ' + row + ', Column: ' + col);
});
Check a running example here.