add: if (!tinyMCE.isInstance(inst)) continue; 
context: function TinyMCE_autosave_beforeUnloadHandler() {	var msg = tinyMCE.getLang("lang_autosave_unload_msg");	var anyDirty = false;	for (var n in tinyMCE.instances) {		var inst = tinyMCE.instances[n];		if (inst.isDirty())			return msg;	}	return;}
meta: 3433	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3433/3ed89b9e86e14587e7215937202af70b81fb8625/editor_plugin_src.js/clean/wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js