Most likely not, but that is such a well know script, why not disguise a little further? - just in case...
In fact, I tend to avoid 'email' as a name of a var anyway, because some bots reading the form can figure it out and start hitting the form with a POST of their own.PHP Code:
var recipient = "e-mail"
var z1 = "user";
var z2 = "domainname";
var z3 = "com";
var s1 = "@";
var s2 = ".";
document.write("<a href=" + "mai" + "lto:" +z1+s1+z2+s2+z3 ">" + recipient + "</a>" + "!")