function optin_checkemail(str){
	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("Please check your email address!")
		testresults=false
	}
	return (testresults)
}