rem: if (!this._blurred) this.mDialog.document.documentElement.getButton('accept').disabled = false; 
add: try { if (!this._blurred) this.mDialog.document.documentElement.getButton('accept').disabled = false; } catch (ex) {} 
context:     notify: function (aTimer) {        if (!this._blurred)          this.mDialog.document.documentElement.getButton('accept').disabled = false;        this._timer = null;    },
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/4707ddb5aa07c8a98419f8a8881dde2e00d579b2/nsHelperAppDlg.js/buggy/embedding/components/ui/helperAppDlg/nsHelperAppDlg.js