It's done using Javascript frameworks like script.aculo.us and Rico. While you certainly can use Perl to generate code calling them on the fly, it's 80% client side (with 20% server side sending back HTML snippets in response to callbacks from the Javascript).

In reply to Re: Click and Drag Functionality in Web Apps with Perl by Fletch
in thread Click and Drag Functionality in Web Apps with Perl by monkfan

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