It's trivially implemented in something like Jquery. Just give related elements the same class name. $('.someClass-xx') .mouseover(function () { $('.so

It's trivially implemented in something like Jquery. Just give related elements the same class name. $('.someClass-xx') .mouseover(function () { $('.someClass-xx').each(function () {/* Do Stuff */}) }) .mouseout(function () { $('.someClass-xx').each(function () {/* Do Stuff */}) }) I only say it's better to implement in js because css forces you to tie behavior to markup in this case. Good implementation separates content/markup (html), presentation (css), and behavior (js).