rem: this.savePage( this.bgImageURL() ); 
add: this.savePage( this.bgImageURL(), true ); 
context:     saveBGImage : function () {        this.savePage( this.bgImageURL() );    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/fde1da27842d670ab62fe00d9e71ded7d59b16a9/nsContextMenu.js/clean/xpfe/browser/resources/content/nsContextMenu.js