style.opacity = '0.1'; 
style.setProperty('opacity', '0.1', 'important'); 
    that.mouseout = function(event) {        var style = that.button?that.button.style:null;        if (style) {            style.opacity = '0.1';        }    };
4463	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4463/89981e0370967c7988b7d0f7aafa5e53dc8f6f1f/cacheobj.js/clean/src/chrome/content/cacheobj.js