[Plugin: Youtube Sidebar Widget] ?wmode=transparent

Hi there

I am having issues with my dropdown menu being hidden behind the video. I have read that it has nothing to do with z-index (and I can confirm that this doesn’t work), but rather I need to append the ?wmode=transparent suffix to the youtube URL. How would I do this with this plugin?

Thanks!

http://ww.wp.xz.cn/extend/plugins/youtube-sidebar-widget/