title: EJB3 Stateful session bean for login and shopping cart and change template
body: <p>Hello every body now I work with shopping cart, I wonder use between Stateful session beans or HTTP session for cart or login. Everybody have any ideas?</p>
  
  <p>In Stateful Session bean how to do compare state for item id, if it equals I will add to item one unit it means if item id = 1 it is coke  and user add to cart one more coke it will become 2 coke unit. With HTTP session it easy but with Stateful and JSF I don't know how to do it?</p>
  
  <p>And little question for change skin for site. I was create a combobox for user can select skin name and when user select other skin difference default skin, the default skin will change to other, but how I can change css and images ?</p>
  
  <p>Please help me thank before!</p>