You can take a look at mb.containerPlus plugin: http://pupunzi.com/#mb.components/mb.containerPlus/containerPlus.html

I don't think there is anything for opening a new browser window, but there is the Dialog feature in jQueryUI that creates an overlay that appears as if it were a new window, complete with the ability to move the dialog about on the screen. You can read more about how to use it here: http://docs.jquery.com/UI/Dialog.

In a nutshell, you create a DIV that is the form, and then use jQuery to "convert" it into a form. jQuery hides the DIV, and when requested to show it, shows the DIV on top of the page in the centre with a shadow obscuring the rest of the page. It's very slick in my opinion.

Note: I don't think this supports minimise and maximise, but you can create your own links that provide these sorts of features.

There's also a more concise example at http://www.thewhyandthehow.com/jquery-modal-dialog/