Adjust JavaScript/ CSS of Wordpress Plugins

Regarding -> [login to view URL] 1) When you open the above URL, a video Fancybox will auto-load. If you close the Fancybox you will notice "next/previous" navigation arrows at the BOTTOM of the post. They are created by the plugin "WP Post Navigation". What I need is for these arrows to pop forward when the Easy Fancybox Plugin is active (like the Sharebar does) and at the same time the original arrow images should be swapped out with the thin white arrows you see in the attached [login to view URL]… of course, they will need to re-position to match the [login to view URL] AND must be coded to stay positioned next to the Fancybox even when the browser window is resized (like the Sharebar does). This needs to work in the current versions of Safari, Explorer, Firefox and iPad iOS7. Last, the "WP Post Navigation" arrows need to go back to normal when the Fancybox is closed (like the Sharebar does). 2) Totally different, but quick fix: I want to crop away the BLACK MASK from the Video Image Thumbnail. With my limited knowledge of CSS I tried adding the code below to my [login to view URL], but it just took everything off the bottom and I couldn't figure out how to shift the image up in the "crop": .video-embed { height: 280px; overflow: hidden; } *** Only bid on this if you are 100% sure you are capable of achieving everything described in this job description.