function checkemail() {
	var testresults;
	var str=document.forms[0].email.value;
	var filter = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if (filter.test(str))
		testresults=true;
	else {
		alert("Ogiltlig e-postadress!");
		testresults = false;
	}
	return (testresults);
}