TYPO3 Core

Where do you want this feature? For Typoscript (link configuration)? In the BE?

Anyway, I think that it makes litte sense to makeonly one window-open parameter available.

Thanks Martin, for your fast reply - and sorry I've been to short in my first post here :)

Imo It would be a nice feature when it would be possible to add these window.open() specs by typoscript like the popup-selector or target-selector to enable/disable them.
In the backend, when enabled, a selection would be nice, like "enable vertical scrollbar" and "enable horizonal scrollbar".

Of course it's a great idea to add even more of those window.open specs (like - window resizeable [y/n], and others like statusbar, titlebar, toobar, location (y/n) as left and top (px or percent).

As you wrote it makes little sense to make only one parameter available - but that IS what we have right now since "height" and "width" are the only parameters available yet.
In my point of view scrollbars is the most needed feature. Others may make sense, too.
Maybe there is another way to solve this (i.e. by link configuration)? I could not find any way right now to configure the scrollbars. Google takes me with "+scrollbar +rte" to a german thread which suggests KJ: Extended TYPO3 Links - but it seems not to work with typo3 v4.0

In your TS template, you may set:

lib.parseFunc.tags.link.typolink.JSwindow_params = left=100,top=100,location=yes,menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no
lib.parseFunc_RTE.tags.link.typolink.JSwindow_params < lib.parseFunc.tags.link.typolink.JSwindow_params
tt_content.image.20.1.imageLinkWrap.typolink.JSwindow_params < lib.parseFunc.tags.link.typolink.JSwindow_params
tt_content.textpic.20.1.imageLinkWrap.typolink.JSwindow_params < lib.parseFunc.tags.link.typolink.JSwindow_params

Then all popup windows to which the template applies will be resizable and will have scrollbars.

I don't think one would want the authors to change those properties for each individual popup window. Setting the properties of popups through TS template seems sufficient.