Below is the code from the bottom of your page, where the e-mail GIF is located.
To make that a e-mail link, just wrap the tag in a anchor link, like in the code below (Blue). Also note the addition of a "border" attribute (Red) to the tag. This removes the border that would normally be added by the link.
border="0" >
But also note that, an e-mail link will only work for visitors that have a local e-mail client configured on their PCs. A e-mail form, like Bravenet's E-Mail Form service, would be far more useful and guarantee that most of your visitors will be able to contact you. Not having a e-mail address on your web site, also helps reduce spam.
