rem: else this.index = this.entryCcount-1; 
add: else this.index = this.entryCount-1; 
context:   markPrevious: function() {    if(this.index > 0) this.index--      else this.index = this.entryCcount-1;  },
meta: 7994	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7994/812b3a43c3a8a6efb4298c4118a3a6294a8a9830/controls.js/buggy/src/controls.js