Index: /FCKeditor.Java/branches/2.4/src/test/java/net/fckeditor/tool/CompatibilityTest.java
===================================================================
--- /FCKeditor.Java/branches/2.4/src/test/java/net/fckeditor/tool/CompatibilityTest.java	(revision 1552)
+++ /FCKeditor.Java/branches/2.4/src/test/java/net/fckeditor/tool/CompatibilityTest.java	(revision 1553)
@@ -91,3 +91,23 @@
 	    assertTrue(Compatibility.check("Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.9) Gecko/20071025 Firefox/1.5.0.9 (Debian-2.0.0.9-2)"));
     }
+	
+	@Test
+	public void testOper925Win2k() throws Exception {
+	    assertFalse(Compatibility.check("Opera/9.25 (Windows NT 5.0; U; en)"));
+    }
+	
+	@Test
+	public void testOpera854WinNT() throws Exception {
+	    assertFalse(Compatibility.check("Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; de) Opera 8.54"));
+    }
+	
+	@Test
+	public void testOpera95OSX() throws Exception {
+		assertTrue(Compatibility.check("Opera/9.50 (Macintosh; Intel Mac OS X; U; en)"));   
+    }
+	
+	@Test
+	public void testOpera95WinVista() throws Exception {
+		assertTrue(Compatibility.check("Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 6.0; en) Opera 9.50"));   
+    }
 }