I am trying to have a user enter an ISBN and then select it and then I do some remote scripting so I can popluate the editor with book data for the isbn.

This line of javascript is failing in both IE and Netscape/Firefox

      if (e.setSelectionRange) {    
         strText = e.value.substring(e.selectionStart, e.selectionEnd);
      }
      else {
         strText = document.selection.createRange().text;

       }

This works with a simple textarea html forms control

Thanks