JavaScript Mail Form
The form on this page uses JavaScript to send an e-mail message to a specified address. The benefit of this is that you can format the message so that it reads like a regular piece of mail rather than having it be sent in the standard name=value pairs of a normal 'mailto:' form.
If you are using this page on a corporate site then you might want to replace the address and/or subject fields with a pulldown list. This would let visitors quickly select who they want to write to.
Before you feel the need to ask, there is no way using JavaScript to confirm that the message has actually been sent. That is, when the browser is set to confirm before submitting forms through email. Of course using a cgi script as the target would solve that.