diff --git a/select2.css b/select2.css
index cfd8a0e9..0e72e293 100644
--- a/select2.css
+++ b/select2.css
@@ -45,7 +45,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
 
     -webkit-touch-callout: none;
       -webkit-user-select: none;
-       -khtml-user-select: none;
          -moz-user-select: none;
           -ms-user-select: none;
               user-select: none;
@@ -54,8 +53,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #eee), color-stop(0.5, #fff));
     background-image: -webkit-linear-gradient(center bottom, #eee 0%, #fff 50%);
     background-image: -moz-linear-gradient(center bottom, #eee 0%, #fff 50%);
-    background-image: -o-linear-gradient(bottom, #eee 0%, #fff 50%);
-    background-image: -ms-linear-gradient(top, #fff 0%, #eee 50%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#ffffff', endColorstr = '#eeeeee', GradientType = 0);
     background-image: linear-gradient(top, #fff 0%, #eee 50%);
 }
@@ -68,8 +65,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #eee), color-stop(0.9, #fff));
     background-image: -webkit-linear-gradient(center bottom, #eee 0%, #fff 90%);
     background-image: -moz-linear-gradient(center bottom, #eee 0%, #fff 90%);
-    background-image: -o-linear-gradient(bottom, #eee 0%, #fff 90%);
-    background-image: -ms-linear-gradient(top, #eee 0%, #fff 90%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#eeeeee', GradientType=0);
     background-image: linear-gradient(top, #eee 0%, #fff 90%);
 }
@@ -129,7 +124,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     z-index: 9998;
     /* styles required for IE to work */
     background-color: #fff;
-    opacity: 0;
     filter: alpha(opacity=0);
 }
 
@@ -197,8 +191,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #ccc), color-stop(0.6, #eee));
     background-image: -webkit-linear-gradient(center bottom, #ccc 0%, #eee 60%);
     background-image: -moz-linear-gradient(center bottom, #ccc 0%, #eee 60%);
-    background-image: -o-linear-gradient(bottom, #ccc 0%, #eee 60%);
-    background-image: -ms-linear-gradient(top, #ccc 0%, #eee 60%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#eeeeee', endColorstr = '#cccccc', GradientType = 0);
     background-image: linear-gradient(top, #ccc 0%, #eee 60%);
 }
@@ -245,8 +237,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background: url('select2.png') no-repeat 100% -22px, -webkit-gradient(linear, left bottom, left top, color-stop(0.85, #fff), color-stop(0.99, #eee));
     background: url('select2.png') no-repeat 100% -22px, -webkit-linear-gradient(center bottom, #fff 85%, #eee 99%);
     background: url('select2.png') no-repeat 100% -22px, -moz-linear-gradient(center bottom, #fff 85%, #eee 99%);
-    background: url('select2.png') no-repeat 100% -22px, -o-linear-gradient(bottom, #fff 85%, #eee 99%);
-    background: url('select2.png') no-repeat 100% -22px, -ms-linear-gradient(top, #fff 85%, #eee 99%);
     background: url('select2.png') no-repeat 100% -22px, linear-gradient(top, #fff 85%, #eee 99%);
 }
 
@@ -259,8 +249,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background: url('select2-spinner.gif') no-repeat 100%, -webkit-gradient(linear, left bottom, left top, color-stop(0.85, #fff), color-stop(0.99, #eee));
     background: url('select2-spinner.gif') no-repeat 100%, -webkit-linear-gradient(center bottom, #fff 85%, #eee 99%);
     background: url('select2-spinner.gif') no-repeat 100%, -moz-linear-gradient(center bottom, #fff 85%, #eee 99%);
-    background: url('select2-spinner.gif') no-repeat 100%, -o-linear-gradient(bottom, #fff 85%, #eee 99%);
-    background: url('select2-spinner.gif') no-repeat 100%, -ms-linear-gradient(top, #fff 85%, #eee 99%);
     background: url('select2-spinner.gif') no-repeat 100%, linear-gradient(top, #fff 85%, #eee 99%);
 }
 
@@ -285,8 +273,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #fff), color-stop(0.5, #eee));
     background-image: -webkit-linear-gradient(center bottom, #fff 0%, #eee 50%);
     background-image: -moz-linear-gradient(center bottom, #fff 0%, #eee 50%);
-    background-image: -o-linear-gradient(bottom, #fff 0%, #eee 50%);
-    background-image: -ms-linear-gradient(top, #fff 0%, #eee 50%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#eeeeee', endColorstr='#ffffff', GradientType=0);
     background-image: linear-gradient(top, #fff 0%, #eee 50%);
 }
@@ -299,8 +285,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
     background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #fff), color-stop(0.5, #eee));
     background-image: -webkit-linear-gradient(center top, #fff 0%, #eee 50%);
     background-image: -moz-linear-gradient(center top, #fff 0%, #eee 50%);
-    background-image: -o-linear-gradient(top, #fff 0%, #eee 50%);
-    background-image: -ms-linear-gradient(bottom, #fff 0%, #eee 50%);
     filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#eeeeee', endColorstr='#ffffff', GradientType=0);
     background-image: linear-gradient(bottom, #fff 0%, #eee 50%);
 }
@@ -357,7 +341,6 @@ Version: @@ver@@ Timestamp: @@timestamp@@
 
     -webkit-touch-callout: none;
       -webkit-user-select: none;
-       -khtml-user-select: none;
          -moz-user-select: none;
           -ms-user-select: none;
               user-select: none;
@@ -455,8 +438,6 @@ disabled look for disabled choices in the results dropdown
     background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(1%, #eee), color-stop(15%, #fff));
     background-image: -webkit-linear-gradient(top, #eee 1%, #fff 15%);
     background-image: -moz-linear-gradient(top, #eee 1%, #fff 15%);
-    background-image: -o-linear-gradient(top, #eee 1%, #fff 15%);
-    background-image: -ms-linear-gradient(top, #eee 1%, #fff 15%);
     background-image: linear-gradient(top, #eee 1%, #fff 15%);
 }
 
@@ -526,7 +507,6 @@ disabled look for disabled choices in the results dropdown
 
     -webkit-touch-callout: none;
       -webkit-user-select: none;
-       -khtml-user-select: none;
          -moz-user-select: none;
           -ms-user-select: none;
               user-select: none;
@@ -536,8 +516,6 @@ disabled look for disabled choices in the results dropdown
     background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(20%, #f4f4f4), color-stop(50%, #f0f0f0), color-stop(52%, #e8e8e8), color-stop(100%, #eee));
     background-image: -webkit-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
     background-image: -moz-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
-    background-image: -o-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
-    background-image: -ms-linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
     background-image: linear-gradient(top, #f4f4f4 20%, #f0f0f0 50%, #e8e8e8 52%, #eee 100%);
 }
 .select2-container-multi .select2-choices .select2-search-choice .select2-chosen {