1) Implemented regular button and html4 button with a button renderer.

2) Fixed ProgressMeter to update correctly when attributes change
3) Fixed sample8.html so that it does not over ride the borders of the HTML4 button this
   messed up the active, hover, and disabled states.


git-svn-id: svn://10.0.0.236/trunk@23070 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/layout/base/nsCSSFrameConstructor.cpp

@@ -1957,6 +1957,11 @@ nsCSSFrameConstructor::ConstructFrameByTag(nsIPresContext*  aPresContext,
       }
       else if (nsHTMLAtoms::button == aTag) {
         rv = NS_NewHTMLButtonControlFrame(newFrame);
+        // the html4 button needs to act just like a 
+        // regular button except contain html content
+        // so it must be replaced or html outside it will
+        // draw into its borders. -EDV
+        isReplaced = PR_TRUE;
         processChildren = PR_TRUE;
       }
       else if (nsHTMLAtoms::label == aTag) {