Option to remove Search button and click on magnifying glass image

Issue Summary

Hi,

First of all many, many thanks for this wonderful module. It saves me hours and days of hacking away to get something similar compatible on many browsers.. My hat off to you.

I'd like to ask if you could help implement it so that one has the option to remove the "Search" button, and be able to click on that magnifying glass image to initiate a search.

Thanks.