.defaultSimpleSkin .mceButton {display:block; border:1px solid #F0F0EE; width:20px; height:20px}\r
.defaultSimpleSkin a.mceButtonEnabled:hover {border:1px solid #0A246A; background-color:#B2BBD0}\r
.defaultSimpleSkin a.mceButtonActive {border:1px solid #0A246A; background-color:#C2CBE0}\r
-.defaultSimpleSkin .mceButtonDisabled span {opacity:0.3; filter:alpha(opacity=30)}\r
+.defaultSimpleSkin .mceButtonDisabled span {opacity:0.3; -ms-filter:'alpha(opacity=30)'; filter:alpha(opacity=30)}\r
\r
/* Separator */\r
.defaultSimpleSkin .mceSeparator {display:block; background:url(../../img/icons.gif) -180px 0; width:2px; height:20px; margin:0 2px 0 4px}\r