The simplest way of get an emerging modal window I want to open a modal emerging window, with some HTML on it and a close button. It should open when the user visits the page. What is the simplest way of doing that and what modules should I use? I have tried with CTools and a javascript (jQuery) emulation of click on a hidden link, but that gives me problems and seem so convoluted to me. Is there any simplest way?
You can check one of the module:


Splashify
Pop-up announcement
Popup On Load