Hola!,
Mira CodeMan, Sobre El execCommand:
<a href='ir.asp?http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/methods/execcommand.asp' target='_blank'>http://msdn.microsoft.com/library/defaul...</a>
Sobre Los Comandos(SaveAs, Paste, Copy...):
<a href='ir.asp?http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/commandids.asp' target='_blank'>http://msdn.microsoft.com/library/defaul...</a>
<CENTER><FONT COLOR=Black SIZE=2><I>"No Hay Cosas Imposibles, Solo Hombres Incapaces"</I></FONT></CENTER>