rem: var signup_form = withDocument( this.document, function () { return getElement( "signup_form" ); } ); 
add: var signup_button = withDocument( this.document, function () { return getElement( "signup_button" ); } ); 
context:     var signup_form = withDocument( this.document, function () { return getElement( "signup_form" ); } );
meta: 4711	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4711/f05d3db661a366bcf7ea7a0c52281e5942127d67/Editor.js/buggy/static/js/Editor.js