Gavin, from topomap.co.nz sent me a note the other day about some work he did in regards to developing a transparency slider for Google Maps V3:
“I’ve created a transparency slider control that works with Google Maps API V3, if there’s enough demand I’ll take some time and extract it from my code to publish as a nice neat example so others can use it too. See it in action at http://www.topomap.co.nz/and use the “contact” tab there to get in touch if you’re interested.”
The transparency slider works perfectly and the slider bar fits well into the layout of the page. I hope to take Gavin’s work and create a stand alone example sometime over the next few days. In the meantime check out topomap.co.nz if you have some free time!