Index: /CKEditor/branches/prototype/_source/core/env.js
===================================================================
--- /CKEditor/branches/prototype/_source/core/env.js	(revision 2481)
+++ /CKEditor/branches/prototype/_source/core/env.js	(revision 2482)
@@ -94,4 +94,52 @@
 		env.gecko = ( navigator.product == 'Gecko' && !env.webkit && !env.opera );
 
+		var version = 0;
+
+		// Internet Explorer 6.0+
+		if ( env.ie )
+			version = parseFloat( agent.match( /msie (\d+)/ )[1] );
+
+		// Gecko.
+		if ( env.gecko )
+		{
+			var geckoRelease = agent.match( /rv:([\d\.]+)/ );
+			if ( geckoRelease )
+			{
+				geckoRelease = geckoRelease[1].split( '.' );
+				version = geckoRelease[0] * 10000 + ( geckoRelease[1] || 0 ) * 100 + ( geckoRelease[2] || 0 );
+			}
+		}
+
+		// Opera 9.50+
+		if ( env.opera )
+			version = parseFloat( opera.version() );
+
+		// Adobe AIR 1.0+
+		// Checked before Safari because AIR have the WebKit rich text editor
+		// features from Safari 3.0.4, but the version reported is 420.
+		if ( env.air )
+			version = parseFloat( agent.match( / adobeair\/(\d+)/ )[1] );
+
+		// WebKit 522+ (Safari 3+)
+		if ( env.webkit )
+			version = parseFloat( agent.match( / applewebkit\/(\d+)/ )[1] );
+
+		/**
+		 * Contains the browser version.
+		 *
+		 * For gecko based browsers (like Firefox) it contains the revision
+		 * number with first three parts concatenated with a padding zero
+		 * (e.g. for revision 1.9.0.2 we have 10900).
+		 *
+		 * For webkit based browser (like Safari and Chrome) it contains the
+		 * WebKit build version (e.g. 522).
+		 * @name CKEDITOR.env.version
+		 * @type Boolean
+		 * @example
+		 * if ( CKEDITOR.env.ie && <b>CKEDITOR.env.version</b> <= 6 )
+		 *     alert( "Ouch!" );
+		 */
+		env.version = version;
+
 		/**
 		 * Indicates that CKEditor is running on a compatible browser.
@@ -102,37 +150,11 @@
 		 *     alert( "Your browser is pretty cool!" );
 		 */
-		env.isCompatible = (function()
-		{
-			// Internet Explorer 6.0+
-			if ( env.ie )
-				return ( agent.match( /msie (\d+)/ )[1] >= 6 );
-
-			// Gecko.
-			if ( env.gecko )
-			{
-				var geckoRelease = agent.match( /rv:([\d\.]+)/ );
-				if ( !geckoRelease )
-					return false;
-				geckoRelease = geckoRelease[1].split( '.' );
-				geckoRelease = geckoRelease[0] * 10000 + ( geckoRelease[1] || 0 ) * 100 + ( geckoRelease[2] || 0 );
-				return geckoRelease >= 10801;
-			}
-
-			// Opera 9.50+
-			if ( env.opera )
-				return parseFloat( opera.version() ) >= 9.5;
-
-			// Adobe AIR 1.0+
-			// Checked before Safari because AIR have the WebKit rich text editor
-			// features from Safari 3.0.4, but the version reported is 420.
-			if ( env.air )
-				return ( agent.match( / adobeair\/(\d+)/ )[1] >= 1 );
-
-			// WebKit 522+ (Safari 3+)
-			if ( env.webkit )
-				return ( agent.match( / applewebkit\/(\d+)/ )[1] >= 522 );
-
-			return false;
-		})();
+		env.isCompatible =
+			( env.ie && version >= 6 ) ||
+			( env.gecko && version >= 10801 ) ||
+			( env.opera && version >= 9.5 ) ||
+			( env.air && version >= 1 ) ||
+			( env.webkit && version >= 522 ) ||
+			false;
 
 		return env;