Question:

Like what browsershots.org did they can have a screenshot of the url i have inputted are there any available script like that?

It's pretty easy to do with <a href="http://code.google.com/p/wkhtmltopdf/" rel="nofollow">wkhtmltopdf</a> and its <a href="http://code.google.com/p/wkhtmltopdf/downloads/detail?name=wkhtmltoimage-0.10.0_rc2-static-amd64.tar.bz2" rel="nofollow">wkhtmltoimage</a> variant:

exec("./wkhtmltoimage http://example.org/ image.png");

Note that the output filename must be in a writable location.