To make it more difficult for spam bots to "harvest" email addresses from your pages you can use this "scrambler" that turns the email address into its ASCII code equivalent.
Enter the email address in the first field and hit the submit button. The scrambled address will be displayed in the second field.
Copy the scrambled code and paste it where the email address should go in you code. (The ASCII code will be automatically selected for you, so you just need to hit "copy")
document.write("<a href='mailto:put your scrambled address here'> Contact us!</a>")
<a href="mailto:put your scrambled address here"> Contact us!</a>