Readded fieldset id and ensured it is unique since it was erroneously removed in another pull request

app/views/cost_objects/_form.html.erb

@@ -30,7 +30,7 @@
   //]]>
 </script>
 
-<fieldset>
+<fieldset id="material_budget_items_fieldset">
   <legend><%= VariableCostObject.human_attribute_name(:material_budget) %></legend>
   <table class="list material_budget_items" id="material_budget_items">
     <thead><tr>
@@ -49,7 +49,7 @@
   <div style="text-align: right"><%= link_to_function l(:button_add_budget_item), "materialBudgetItemsForm.add()", {:class => "icon icon-add"} %></div>
 </fieldset>
 
-<fieldset>
+<fieldset id="labor_budget_items_fieldset">
   <legend><%= VariableCostObject.human_attribute_name(:labor_budget) %></legend>
   <table class="list labor_budget_items" id="labor_budget_items">
     <thead><tr>

features/step_definitions/cost_object_steps.rb

@@ -35,7 +35,7 @@ When(/^I (?:create|update) (?:a|the) (labor|material) item in row (\d+) with the
 end
 
 When(/^I add a new (labor|material) item$/) do | type|
-	steps %Q{ When I click on "Add Planned Costs" within "fieldset##{type}_budget_items" }
+	steps %Q{ When I click on "Add Planned Costs" within "fieldset##{type}_budget_items_fieldset" }
 end
 
 Then (/^the planned (labor|material) costs in row (\d+) should be (.+)$/) do | type, row_nr, amount|