I could think of three possible solutions...
- Enable the PopupEditorMode of the RichHtmlField control.
- Write some script to keep the floating toolbar in view
- Change the CSS so that the HTML editor didn't grow over a certain size and a scroll bar appeared.
Enable the 'popup mode' of the HTML editor
This is relatively straight forward and solves the problem. Basically you have to set the PopupEditorMode property on your RichHtmlField.
<PublishingWebControls:RichHtmlField id="Content" PopupEditorMode="true" FieldName="...
There are a few problems with this approach. Firstly you have to visit every PageLayout to change the declaration of the RichHtmlField control. This can be a pain when you have 20-30 layouts in your publishing site.
Secondly, it slows down the page editing as you have to wait for the dialog to display each time you want to edit a field on a page. And lastly the WYSIWYG experience isn't as good as with floating toolbar.
Keep the floating HTML editor toolbar in view
When added to your master page or layout it will ensure that any HTML editor toolbar will stay in view even when your page scrolls. This means that as you are editing your page the floating toolbar will move down with you as you type, ensuring you always have access to its functionality.
To add this to your page simply copy the scrolltoolbar.js up to your site (using SharePoint designer) and add the SCRIPT tag above to your .master layout...ensuring that the SRC attribute points to the correct location.
Adding this script file also has the benefit of ensuring the floating toolbar is always visible when you try to edit HTML at the bottom of the RTE editor and the top of the RTE is scrolled out of view.