Index: openacs-4/packages/acs-templating/www/resources/mktree.js
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-templating/www/resources/mktree.js,v
diff -u -N -r1.2 -r1.3
--- openacs-4/packages/acs-templating/www/resources/mktree.js	4 Jun 2006 00:45:48 -0000	1.2
+++ openacs-4/packages/acs-templating/www/resources/mktree.js	6 Jul 2006 20:09:47 -0000	1.3
@@ -136,6 +136,10 @@
 
 // Search the document for UL elements with the correct CLASS name, then process them
 function convertTrees() {
+  // this is a check in opera to avoid multiple renderings
+        if (typeof window.treeClass != 'undefined') {
+	  return;
+	}
 	setDefault("treeClass","mktree");
 	setDefault("nodeClosedClass","liClosed");
 	setDefault("nodeOpenClass","liOpen");