Currently the floating toolbar for an inline Editor (a contentEditable div as opposed to a textarea) is positioned relative to the document body, not the Editor itself. If for example your Editor is in a div with its own overflow-y: scroll while the body has overflow: hidden, as is the default in a SharePoint 2010 page, then as you scroll this div, your editor will scroll in the div, but the toolbar remains fixed, when it should scroll along with the editor. We need to be able to append the toolbar to an arbitrary container so that it can be positioned relative to the editor.