Clicking an ancor tag on my site that doesn't have an href causes this error:
[Exception... "Component returned failure code: 0x804b000a [nsIDOMNSHTMLAnchorElement.pathname]" nsresult: "0x804b000a (<unknown>-)" location: "JS frame :: http://static.woopra.com/js/woopra.js :: _TrackClick :: line 76" data: no]
var _download = link.pathname.match(/(?:doc|eps|jpg|png|svg|xls|ppt|pdf|...
http://static.woopra.com/js/woopra.js
not a support question