<a href=”#“ onClick=”location.href=’http://www.example.com’; return false;”>Some
Doing so will typically prevent a search engine spider from following the links, and also prevent users who
navigation may prevent a site from being
spidered at all. If you must use such links, provide alternative navigation somewhere else on the site.
The same issues would also be apparent in navigation involving other client-side dynamic technologies
such as Java applets, AJAX content, and Flash. In general, any navigation not achieved using a standard
tag will hinder site spidering.
Some webmasters have reported that spiders, especially Google, seem to be following some obvious-looking
this is not recommended.
the link from spiders, other sites may link to the URL, which would likely get the page indexed regard-
less. If you don’t want a link to be indexed, you should exclude it using
or using the meta
as well. It is wise to provide alternative navigation to all elements listed in the menus. You can do this
using a set of links at the bottom of the page, a sitemap, or a combination thereof. This way not only
Many drop-down menus are somewhat spider-friendly, whereas others are not at all. The ones that are
typically hide and
unhide an HTML
element dynamically. The key here is that the HTML and links are actually pres-
ent, though hidden, in the document. Search engine algorithms may not, however, appreciate the hidden
aspect — rendering it an
on-page factor. It is wise to list the links
elsewhere in either case.
want a popup to be indexed?
c06.qxd:c06 10:55 121