rem: if (opacity = Element.getStyle(element, "filter").match(/alpha\(opacity=(.*)\)/)) 
add: if (opacity = (Element.getStyle(element, "filter") || '').match(/alpha\(opacity=(.*)\)/)) 
context: Element.getOpacity = function(element){  var opacity;  if (opacity = Element.getStyle(element, "opacity"))    return parseFloat(opacity);  if (opacity = Element.getStyle(element, "filter").match(/alpha\(opacity=(.*)\)/))    if(opacity[1]) return parseFloat(opacity[1]) / 100;    return 1.0;}
meta: 4973	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4973/eebe7ae33ff385a7eebff58895d4e57b964ae37b/util.js/buggy/src/util.js