rem: if ( !this.onImage ) { this.removeItem( "context-copyimage" ); } 
add: this.showItem( "context-copyimage", this.onImage ); 
context:     initClipboardItems : function () {        // Select All is always OK.            // Copy depends on whether there is selected text.        this.setItemAttr( "context-copy", "disabled", this.isNoTextSelected() );            // Copy link location depends on whether we're on a link.        if ( !this.onLink ) {            this.removeItem( "context-copylink" );        }            // Copy image location depends on whether we're on an image.        if ( !this.onImage ) {            this.removeItem( "context-copyimage" );        }    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/0a83f2dbc3c83d66fb8b11846dbe79f6cbeeeaf7/nsContextMenu.js/buggy/xpfe/browser/resources/content/nsContextMenu.js