Hi there, I've a grid of photos. What I need is the user to be able to click on the photos of people they want to invite to an event. Upon first click I'd like it to alter the CSS/styling (for example add a border or change transparency) then on second click revert back to original style. So toggle I guess. So that a user can click say three images and those three would have a green border showing they've been selected. Then if he'd like to deselect he simply click again and it reverts back to the original style. How is this possible? CSS? Javascript? JQuery? Thank you!