Shoes.app :title => "Little Helper v0.1", :width => 200, :heigth => 300 do
  flow do
    stack :margin => 10  do
      caption "Awful numbers"

      para "Hours/week " 
      @hours = 15
      edit_line 15, :width => 50 do |hours|
	@hours = hours.text.to_f
      end

      para "Money/hour"
      @wage = 16
      edit_line 16, :width => 50 do |wage|
	@wage = wage.text.to_f
      end

      para "Tax (in %)"
      @tax = 20
      edit_line 20, :width => 50 do |tax|
	@tax = tax.text.to_f
      end

      button "Calculate" do
	@sum =  @hours * @wage * ((100-@tax)/100.0) * 4.3
	@money.text = @sum
      end

      caption "Rags or riches"
      @money = para 
    end
  end
end