<button id='add' for-table='#example1'>Add Row</button>

$("#add").click(function(e){
    var table = $(this).attr('for-table');  //get the target table selector
    var $tr = $(table + ">tbody>tr:last-child").clone(true, true);  //clone the last row
    var nextID = parseInt($tr.find("input.tabledit-identifier").val()) + 1; //get the ID and add one.
    $tr.find("input.tabledit-identifier").val(nextID);  //set the row identifier
    $tr.find("span.tabledit-identifier").text(nextID);  //set the row identifier
    $(table + ">tbody").append($tr);    //add the row to the table
    $tr.find(".tabledit-edit-button").click();  //pretend to click the edit button
    $tr.find("input, select").val("");  //wipe out the inputs.
});