    onClick: function(event)    {        if (!isLeftClick(event) || event.clientX <= 20 || event.detail != 2)            return;                var row = getAncestorByClass(event.target, "cssRule");        if (row && !getAncestorByClass(event.target, "cssPropName")            && !getAncestorByClass(event.target, "cssPropValue"))        {            this.insertPropertyRow(row);            cancelEvent(event);        }    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/e1d42ad3fad63b72826a4e2ed0726866484c9ac3/css.js/buggy/extension/content/firebug/css.js