add: if (index < 0) return -1;  
context: function bov_getpi (index){    return 0;}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/bb4371516e0961b4583fccf05f8b9f3ba9808c81/tree-utils.js/clean/extensions/venkman/resources/content/tree-utils.js