How do i create a dropdown menu in my wordpress blog. I want to show my categories in parent and child categories lists with parent categories on the menu and child categories in the drop down list of coressponding parent category. By default all the categories are showing up on the navigation bar and overflowing over 3 columns down.
Suggest you search for Wordpress Drop Down Menu to find a plugin you like. The easiest think to do is find a plugin that you can add where you want on your site - for example a sidebar widget? Here's a link to the first one that popped up when I searched: http://wordpress.org/extend/plugins/dropdown-menu-widget/ BTW I haven't tried it
If you need sidebar widget than @seafrontsteve is right, if you need dropdown menu in post, search for form plugins
I think it is even simpler than that guys. Use wp nav menu() in place of wp_page_menu(). You can then use the Menu building controls built into WordPress, and create as many drop-down levels as you like. Look at the TwentyTen theme, standard with all WP installs, for usage and CSS styling.