Position any element to any element, even if they are hidden
This plugin works exactly (at least in our intentions) as position plugin from jQuery UI.
The need for this plugin raised from the fact that it doesn't work with hidden elements, and in some cases we prefered to position them before showing.
Since we still use jQuery UI where we don't need to position anything hidden or any of the additional options, this plugin is built so that it can use the exact same option input, this way you just need to change your code from $().position({options...}); to $().hiddenPosition({options...});.
The inverse is true unless you are using one of the few additional options, like viewport setting. Another big difference is that HiddenPosition works well even with position:relative elements, so take that into account if you need to go back to jQuery UI.