function echeck(str) {
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
	if (str.indexOf(at,(lat+1))!=-1){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
		if (str.indexOf(dot,(lat+2))==-1){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
	if (str.indexOf(" ")!=-1){
		alert("You have entered an invalid email address.  Please enter a valid email address to continue.")
		return false
	}
	return true					
}

function checkForm(){
	if (document.subscribe.firstname.value.length == 0) {
		error = "Please enter your first name.\n";
		document.subscribe.firstname.focus();
		alert(error);
		return false;
	}
	else {
	}
	if (document.subscribe.lastname.value.length == 0) {
		error = "Please enter your last name.\n";
		document.subscribe.lastname.focus();
		alert(error);
		return false;
	}
	else {
	}
	if (document.subscribe.company.value.length == 0) {
		error = "Please enter your company name.\n";
		document.subscribe.company.focus();
		alert(error);
		return false;
	}
	else {
	}
	if (document.subscribe.city.value.length == 0) {
		error = "Please enter your city.\n";
		document.subscribe.city.focus();
		alert(error);
		return false;
	}
	else {
	}
	if (document.subscribe.state.value.length == 0) {
		error = "Please enter your state.\n";
		document.subscribe.state.focus();
		alert(error);
		return false;
	}
	else {
	}
	if (document.subscribe.email.value.length == 0) {
		error = "Please enter your email address.\n";
		document.subscribe.email.focus();
		alert(error);
		return false;
	}
	else {
	}
        if (echeck(document.subscribe.email.value)==false){
		document.subscribe.email.focus()
		return false
	}
	else {
	}

}


function checkForm2(){
	if (document.unsubscribe.email.value.length == 0) {
		error = "Please enter your email address.\n";
		document.unsubscribe.email.focus();
		alert(error);
		return false;
	}
	else {
	}
        if (echeck(document.unsubscribe.email.value)==false){
		document.unsubscribe.email.focus()
		return false
	}
	else {
	}

}