How to view perl script

I have a form in html page, which has a perl script in action= field. I can see this by doing view source in the webpage in web browser.

<form action="loginscript.pl" method="post">

I want to see what the script is doing, but I dont know how to view the content of loginscript.pl. When I put the perl script in url (like http://ift.tt/1i5vnpu) the script gets executed.

However I dont want to execute the script, I just want to see the script. How to view the script ?