My setup for lightbox, changed the transition speed

lightbox_mods.js

//
//  Configurationl
//
LightboxOptions = Object.extend({
    fileLoadingImage:        'images/loading.gif',     
    fileBottomNavCloseImage: 'images/closelabel.gif',

    overlayOpacity: 0.8,   // controls transparency of shadow overlay

    animate: true,         // toggles resizing animations
    resizeSpeed: 7,        // controls the speed of the image resizing animations (1=slowest and 10=fastest)

    borderSize: 10,         //if you adjust the padding in the CSS, you will need to update this variable

 // When grouping images this is used to write: Image # of #.
 // Change it for non-english localization
 labelImage: "Image",
 labelOf: "of"
}, window.LightboxOptions || {});