Remove 25x and options. Browsers do not support them. Add 16x which is the max. Fixes #3284

web/skins/classic/includes/config.php

@@ -19,8 +19,7 @@
 //
 
 $rates = array(
-  -5000 => '-50x',
-  -2500 => '-25x',
+  -1600 => '-16x',
   -1000 => '-10x',
   -500  => '-5x',
   -200  => '-2x',
@@ -34,8 +33,7 @@ $rates = array(
   200   => '2x',
   500   => '5x',
   1000  => '10x',
-  2500  => '25x',
-  5000  => '50x'
+  1600  => '16x', // Max that Chrome will support
 );
 
 $scales = array(