I'm developing a website. I've installed wordpress e-commerce wordpress plugin. The issue is I get formulation of it's type page after i click pages(on my small primary menu of site)

http://wordpress.org/extend/plugins/wp-e-commerce/

Is also there any choice to remove product page in the wordpress_nav_menu function?

Help me to resolve this.

wp_nav_menu( array('container_class'=>'menu','menu_class'=>'', 'menu' => 'main menu' ) );

I produced a custom menu.