add custom class on overlay trough "data-css" on trigger + min code

Hi. I just have to use lightbox property in few pages on a project. The idea is that one it's a kind of gallery since the another one it's a content ( through ajax ). I did not want to call plugin twice just for a different width ( .vbox-container {max-width:600px )  ) so i added option "data-css" on vbox trigger, like <a class="lightbox" data-css="style-2" data-type="ajax" href="member.php"> . Since now, the main "vbox-overlay" will also have "style-2 " class and i think there is a easier way to create different themes for boxes using only css.