rhomobile - integrating images in ruby command -

i have index.erb , want show picture dependent on condition. so, choose if loop, don´t know how call image written in html within ruby command? perhaps it´s easy, don´t have idea, because i´m newbie ;).

<%= if (condition 1 < 40)             picture 1          elsif (condition 2 > 70)           picture 2          else          picture 3 end %>  <img src="/public/images/picture1.png"> <img src="/public/images/picture2.png"> <img src="/public/images/picture3.png"> 

please :)

i'm not sure if whether want, i'd try anyway...

<% if condition 1 %>   <img src="/public/images/picture1.png"> <% elsif condition 2 %>   <img src="/public/images/picture2.png"> <% else %>   <img src="/public/images/picture3.png"> <% end %> 

change condition 1 , condition 2 conditional code want...