Allow LAYER tags to nest within themselves.

htmlparser/src/nsElementTable.cpp

@@ -716,7 +716,7 @@ nsHTMLElement gHTMLElements[] = {
     /*req-parent excl-parent*/          eHTMLTag_unknown,eHTMLTag_unknown,
 	  /*rootnodes,endrootnodes*/          &gRootTags,&gRootTags,	
     /*autoclose starttags and endtags*/ 0,0,0,
-    /*parent,incl,exclgroups*/          kBlock, kFlowEntity, kSelf,	
+    /*parent,incl,exclgroups*/          kBlock, kFlowEntity|kSelf, kSelf,	
     /*special props, prop-range*/       0,kDefaultPropRange,
     /*special parents,kids,skip*/       0,0,eHTMLTag_unknown},
 

parser/htmlparser/src/nsElementTable.cpp

@@ -716,7 +716,7 @@ nsHTMLElement gHTMLElements[] = {
     /*req-parent excl-parent*/          eHTMLTag_unknown,eHTMLTag_unknown,
 	  /*rootnodes,endrootnodes*/          &gRootTags,&gRootTags,	
     /*autoclose starttags and endtags*/ 0,0,0,
-    /*parent,incl,exclgroups*/          kBlock, kFlowEntity, kSelf,	
+    /*parent,incl,exclgroups*/          kBlock, kFlowEntity|kSelf, kSelf,	
     /*special props, prop-range*/       0,kDefaultPropRange,
     /*special parents,kids,skip*/       0,0,eHTMLTag_unknown},