++index; return index; 
++index; return index; 
function getWatchRowIndex(row){    var index = -1;    for (; row && hasClass(row, "watchRow"); row = row.previousSibling)        ++index;     return index;   }
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/e1d42ad3fad63b72826a4e2ed0726866484c9ac3/dom.js/clean/extension/content/firebug/dom.js