ie9 Display Issue

[mrbooie]

So I noticed a display issue with the transparent background of the MB_overlay.  Essentially, in ie9 this background would not show up like it did with all other browsers (firefox, chrome, ie8).  I found a fix which basically involved removing one of the inline style settings in the .js file.  
Find the line
this.MBoverlay = new Element("div", {id: "MB_overlay", style: "opacity: 0"}); 

and replace with
this.MBoverlay = new Element("div", {id: "MB_overlay"});

and it seems to do the trick.