If you want to use the arrow keys to browse between images in Lightbox you can edit file: core/litebox-1.0.js On line 375 you find this: } else if(key == 'p'){ // display previous image change to this: } else if((key == 'p') || (keycode == 37)){ On line 380 you find this: } else if(key == 'n') { // display next image Change to this: } else if((key == 'n') || (keycode == 39)){ This will make it possible to use left and right arrow key to browse images.