rem: if (this.parentRecord) 
add: if ("parentRecord" in this) 
context: function tolr_getshare(){    if (this.parentRecord)        return this.parentRecord._share;    ASSERT (0, "TOLabelRecord cannot be the root of a visible tree.");    return null;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/89326cbcdc6feb4eef3ffc00bb488c9640e8dd81/tree-utils.js/buggy/extensions/venkman/resources/content/tree-utils.js