    onMouseDown: function(event)    {        // XXjoe Hack to only allow clicking on the checkbox        if (!isLeftClick(event) || event.clientX > 20)            return;                if (hasClass(event.target, "textEditor"))            return;                var row = getAncestorByClass(event.target, "cssProp");        if (row)        {            this.disablePropertyRow(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