I have a gravatar method in the User_helper of a Rails3 application. The code is below: \[code\]module UsersHelper def gravatar_for(user, options = {:size => 50}) gravatar_image_tag(user.email.downcase, :alt => user.name, :class => "gravatar", :gravatar => options) endend\[/code\]Currently this method sets the default size as 50px yet this is changed in some implementations throughout the app. I want the gravatar to become part of the "round" class (as well as the "gravatar" class) when the size of the gravatar is greater than 30px. How would I do this?Thanks in advance