hideModal();
var all_indexes = $("#member_li_<%=params[:member_id] %>").nextAll().find("td:first-child");
for(var i = 0; i < all_indexes.length; i++){
    $(all_indexes[i]).html(parseInt($(all_indexes[i]).html()) - 1);
}
$("#member_li_<%=params[:member_id] %>").remove();
$("#st_groups").html("<%=escape_javascript(render :partial => 'new_groups_name', :locals => {:course_groups => @course_groups}) %>");
$("#group_children_list").html("<%= escape_javascript( render :partial => 'layouts/group_children_list', :locals => {:course => @course})%>");
$("#student_number").html("<%= studentCount(@course) %>");