$(document).ready(function()
{
    $('#register_child_dob_2_month, #register_child_name_2, #register_child_dob_3_month , #register_child_name_3').parent().hide();
    $('#register_child_name_1').parent().after().append('<div id="addNewChildren"><a href="javascript:toggleExtraChild();">Add more children</a></div>');
});


function toggleExtraChild()
{
    $('#addNewChildren').hide();
    $('#register_child_dob_2_month, #register_child_name_2, #register_child_dob_3_month , #register_child_name_3').parent().show('slow');
}