The only thing like that, absolutely free, fully visual (WYSIWYG) dropdown menu generator online! Generated menu is pure CSS3, without any JS, or it can fit automatically in blogger's header, within one click! There are several predefined styles with easy color adjustment, the ability to import styles created by users, and advanced options for customization of every single element. Also, drag&drop for menu elements and links, and importing earlier created menu structure.
Use predefined styles
Fixed menu part
Fixed part elements
Fixed part elements - after hover
Dropdown menu part