On websites, links can be opened in new windows/tabs using the middle-click button, CTRL+left click or Context Menu->'Open in new tab' option. However, this behaviour seems to be not implemented for submit buttons on forms, such as search forms.
For example, when watching music videos on YouTube, I often wish to search for my next video while the current one continues playing. I typically type in my query, but am stuck at how to search without interrupting the video. Middle-click and the other actions don't work, which seems quite strange.
So it got me thinking. Is there a nice, intuitive way to allow a user to submit a form, loading in a new window at their request? The shortcuts for links seem to be learned behaviours, and I suspect that many people would see a button and a link as distinct. The only intuitive way I can think of is having an alternative button with label 'Search (New Window)', but this seems quite convoluted and bulky.