We're having a problem with the plugin. I'm on a pretty good sized Mac in terms of screen size, and Social Marketing's lightbox puts the share options in the dead center of the page. Nicely done, by the way.
However, when we click the option to share...say, on Facebook, the optional 'comment now' box that appears, appears below the bottom of the page, and there is no Earthly way to scroll down to hit its submit button.
We would like to know what part of your code we need to modify to have the initial lightbox dialogue box appear at or near the top of the page, instead of in the center of the page.