function test()
{
	document.write("test".html"");
}

function emailJanet()
{
	var email1="<a href=mailto:";
	var email2="janet@";
	var email3="janetdriver.co.uk>Email me</a>";
	document.write(email1 + email2 + email3);
}


<a href="mailto:janet@janetdriver.co.uk">email me</a>