After installing WP e-Commerce plugin primary theme menu functionality got broken. Here is theme with installed WP e-Commerce plugin: http://www.interactstaging.net/clients/tozzi/ and here clean theme install which custom theme is based on: http://interactstaging.net/fusiontheme/
Any clue what can be wrong?
PS. I have adjusted CSS to get sub menus to work, but still have no clue why WP e-Commerce is breaking them.
PS2. Looks like CSS trick doesn't work on IE10 :\