If you want to disable the typing in the DIV element then the value of the tunselectable attribute should be "on" and the contentEditable attribute should be set to false, e.g.
<div style="BORDER: green 1px solid;-moz-user-select: none;" contentEditable="false" unselectable="on">txt</div>
Please, read carefully the information below: The content area of RadEditor is a standard editable IFRAME element which uses the Rich Text Editing engine of the browser under which it operates. The browsers offers a quite limited API and there is not a 100% well working and 100% cross browser solution for implementing editable and non editable areas. Here are the articles that MSDN and Mozilla Development center offer for your scenario:
MSDN: Create and use editable regions with the CONTENTEDITABLE
If you experience any problems, my suggestion is to implement your scenario as a separate solution using an editable DIV element (<div contenteditable="true" style="1px solid red;width:300px;height:300px;">sample content</div> as the editor. If you succeed to implement a fully functional solution using a standard editable DIV, we will help you integrate it into the editor and use the editor content area as a source area.
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