New Function in contextmenu enabled only with custom website ASP.NET
<p>Here is what i want, is it possible??
If my page will be opened in internet browser, new function will be added to right click contextmenu. But if I leave my page, this new function in contextmenu will disappears.</p>

<p>E.G.: I will go to my website, so new function will be automatically added to rightclick contextmenu. Now I will go e.g. to wikipedia, right click to some marked text and I will be able to use my new function on that, which will be connected with my website, opened in other windowd. This function will e.g. modify and copy that marked text to my website. 
If I quit my website, function in contextmenu will dissapers.
I just want my website to have own function in contextmenu for whole browser, but only when this website is opened.
It's importatnt, that user doesn't have to download any plugin atc. It must be fully automatic.</p>

<p>If it is possible, can you please give my some usefull hints or tell me how to do it. I have no idea at this moment.</p>

<p>Thanks a lot.</p>
