rem: var image = this._image.style.backgroundImage; return  image == this._imageChecked || image == this._imageDisabledChecked; 
add: return this._image.style.backgroundImage.indexOf("Unchecked") == -1; 
context:     isChecked: function() {        var image = this._image.style.backgroundImage;        return  image == this._imageChecked || image == this._imageDisabledChecked;    },
meta: 5515	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5515/f1782c774313ba79c127ba5da30580c5ce1f4c32/BaseCheckRadio.js/buggy/src/thinwire/render/web/resources/BaseCheckRadio.js