rem:  title = this.replaceInsert( title, 2, this.percent ); 
add:  if ( this.percent != -1 ) { title = this.replaceInsert( title, 2, this.percent ); } 
context:     setTitle: function() {        // Start with saving/opening template.        var title = this.saving ? this.getString( "savingTitle" ) : this.getString( "openingTitle" );        // Use file name as insert 1.        title = this.replaceInsert( title, 1, this.fileName() );        // Use percentage as insert 2.        title = this.replaceInsert( title, 2, this.percent );        // Set <window>'s title attribute.        if ( this.dialog ) {            this.dialog.title = title;        }    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d9ec8520f9db342927b6757b1154ea8ae4d021e3/nsProgressDialog.js/buggy/embedding/components/ui/progressDlg/nsProgressDialog.js