diff -r e26e18b7099e html.editor/src/org/netbeans/modules/html/editor/HTMLBracesMatching.java
--- a/html.editor/src/org/netbeans/modules/html/editor/HTMLBracesMatching.java	Mon Oct 06 16:06:08 2008 +0200
+++ b/html.editor/src/org/netbeans/modules/html/editor/HTMLBracesMatching.java	Mon Oct 06 16:09:48 2008 +0200
@@ -127,9 +127,13 @@
                                             } else {
                                                 int from = t2.offset(th);
                                                 int to = t3.offset(th) + t3.length();
-                                                return new int[]{from, to, 
-                                                                 from, tagNameEnd,
-                                                                 to - 1, to};
+                                                if (tagNameEnd != -1) {
+                                                    return new int[]{from, to,
+                                                                     from, tagNameEnd,
+                                                                     to - 1, to};
+                                                } else {
+                                                    return new int [] {from, to};
+                                                }
                                             }
                                         } else if(t3.id() == HTMLTokenId.TAG_OPEN || t3.id() == HTMLTokenId.TAG_CLOSE) {
                                             tagNameEnd = t3.offset(th) + t3.length();