>>>>Look at appendChild, insertAdjacentElement, insertAdjacentHTML, innerHTML methods on MSDN for ways to insert the script into the loaded HTML page. If all else fails you can always write the original file as a local file, modify it there and reload it with the changes.
>
>Ok. No problem with insert strings into my loaded HTML... the big problem is that I didn´t find a JavaScript that does the job correctly... every script I found just shows an alert window, and if I rip off the allert, the code doesn´t work...

If changing the HTML is no problem then change the body tag to include the following: (remove the extra space)

< BODY oncontextmenu="return false" >

I don't know if this works in Netscrape, it works in IE.