<!--
function checkData (){
if (document.emailform.subscription.value == "Unsubscribe from VHF/UHF Mailing List") {
	if (document.emailform.handle.value == "") {
        	alert("Please fill in your handle.")
        	document.emailform.handle.focus()
	        return false}
	if (document.emailform.callsign.value == "") {
		alert('Please fill in your amateur radio callsign.')
        	document.emailform.callsign.focus()
        	return false}
	if (document.emailform.email.value == "") {
        	alert("Please fill in your email.")
	        document.emailform.email.focus()
        	return false}
	if(document.emailform.email.value.indexOf('@', 0) == -1) {
		alert('The email you entered is not a valid e-mail address!')
	        document.emailform.email.focus()
        	return false;}
}
else
{
	if (document.emailform.handle.value == "") {
        	alert("Please fill in your handle.")
        	document.emailform.handle.focus()
	        return false}
	if (document.emailform.callsign.value == "") {
		alert('Please fill in your amateur radio callsign.')
        	document.emailform.callsign.focus()
        	return false}
	if (document.emailform.city.value == "") {
		alert('Please fill in your city.')
        	document.emailform.city.focus()
        	return false}
	if (document.emailform.state.value == "") {
		alert('Please fill in your state/province.')
	        document.emailform.state.focus()
        	return false}
	if (document.emailform.grid.value == "") {
		alert('Please fill in your grid square.')
	        document.emailform.grid.focus()
        	return false}
	if (document.emailform.email.value == "") {
        	alert("Please fill in your email.")
	        document.emailform.email.focus()
        	return false}
	if(document.emailform.email.value.indexOf('@', 0) == -1) {
		alert('The email you entered is not a valid e-mail address!')
	        document.emailform.email.focus()
        	return false;}
	}
}
// -->