prevent vertical scrollbar in chrom thumbnails

imgs w/o src have 0 width / height, floating / absolutely positioned
elements don't fill up the parent, so the parent thinks it has 0 width /
height, and chrom doesn't reposition when the img does get a src.

the file input always has a width / height, so don't float / position it
so it fills up the  parent.

4chan_x.user.js

@@ -3169,11 +3169,11 @@
         http://code.google.com/p/chromium/issues/detail?id=78961\
         */\
         font-size: 100px;\
-        position: absolute;\
-        left: 0;\
         opacity: 0;\
       }\
       #qr #files img {\
+        position: absolute;\
+        left: 0;\
         max-height: 100px;\
         max-width:  100px;\
       }\

script.coffee

@@ -2501,11 +2501,11 @@ Main =
         http://code.google.com/p/chromium/issues/detail?id=78961
         */
         font-size: 100px;
-        position: absolute;
-        left: 0;
         opacity: 0;
       }
       #qr #files img {
+        position: absolute;
+        left: 0;
         max-height: 100px;
         max-width:  100px;
       }