ProtoShare supports the ability to create simple gray-box wireframes in addition to simulating more complex Internet functionality, depending on your needs.
If you need to further increase the fidelity of your prototype, you can include assets such as images, SWFs, and rich text. Because ProtoShare creates prototypes using HTML, CSS, and JavaScript, you can add styles by configuring component properties or by using stylesheets and state-based components.
For advanced Professional plan users, you can use the HTML sandbox to create your own components. For more information please visit the following link: Create & Add Your Own Components in the Sandbox .