function echeck(str,f) {
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
		 f.email.value = "Invalid email address";
		 return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		 f.email.value = "Invalid email address";
		 return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		 f.email.value = "Invalid email address";
			return false
	}
	 if (str.indexOf(at,(lat+1))!=-1){
		 f.email.value = "Invalid email address";
			return false
	 }
	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		 f.email.value = "Invalid email address";
			return false
	 }
	 if (str.indexOf(dot,(lat+2))==-1){
		 f.email.value = "Invalid email address";
			return false
	 }
	 if (str.indexOf(" ")!=-1){
		 f.email.value = "Invalid email address";
			return false
	 }
	 return true					
}

function cdrom(f)
	{
		if (f.firstname.value == ""){
			f.firstname.focus();
			f.firstname.select();
			f.firstname.value = "Enter your first name";
			return false;
		}
		if (f.lastname.value == ""){
			f.lastname.focus();
			f.lastname.select();
			f.lastname.value = "Enter your last name";
			return false;
		}
		if (f.phone1.value == ""){
			f.phone1.focus();
			f.phone1.select();
			f.phone1.value = "##";
			return false;
		}
		if (f.phone2.value == ""){
			f.phone2.focus();
			f.phone2.select();
			f.phone2.value = "####";
			return false;
		}
		if (f.phone3.value == ""){
			f.phone3.focus();
			f.phone3.select();
			f.phone3.value = "####";
			return false;
		}
		if ((f.email.value==null)||(f.email.value=="")){
			f.email.value = "Enter your email address";
			f.focus();
			return false
		}
		if (echeck(f.email.value,f)==false){
			f.email.focus();
			f.email.select();
			return false
		}
		
	lsubmit(f);
	return false;
}

function brochure(f)
	{
		if (f.firstname.value == ""){
			f.firstname.focus();
			f.firstname.select();
			f.firstname.value = "Enter your first name";
			return false;
		}
		if (f.lastname.value == ""){
			f.lastname.focus();
			f.lastname.select();
			f.lastname.value = "Enter your last name";
			return false;
		}
		if (f.phone1.value == ""){
			f.phone1.focus();
			f.phone1.select();
			f.phone1.value = "##";
			return false;
		}
		if (f.phone2.value == ""){
			f.phone2.focus();
			f.phone2.select();
			f.phone2.value = "####";
			return false;
		}
		if (f.phone3.value == ""){
			f.phone3.focus();
			f.phone3.select();
			f.phone3.value = "####";
			return false;
		}
		if ((f.email.value==null)||(f.email.value=="")){
			f.email.value = "Enter your email address";
			f.focus();
			return false
		}
		if (echeck(f.email.value,f)==false){
			f.email.focus();
			f.email.select();
			return false
		}
		
	lsubmit(f);
	return false;
}

function subscribe(f)
	{
		if (f.firstname.value == ""){
			f.firstname.focus();
			f.firstname.select();
			f.firstname.value = "Enter your first name";
			return false;
		}
		if (f.lastname.value == ""){
			f.lastname.focus();
			f.lastname.select();
			f.lastname.value = "Enter your last name";
			return false;
		}
		if ((f.email.value==null)||(f.email.value=="")){
			f.email.value = "Enter your email address";
			f.focus();
			return false
		}
		if (echeck(f.email.value,f)==false){
			f.email.focus();
			f.email.select();
			return false
		}
		
	lsubmit(f);
	return false;
}

function contact(f)
	{
		if (f.firstname.value == ""){
			f.firstname.focus();
			f.firstname.select();
			f.firstname.value = "Enter your first name";
			return false;
		}
		if (f.lastname.value == ""){
			f.lastname.focus();
			f.lastname.select();
			f.lastname.value = "Enter your last name";
			return false;
		}
		if (f.phone1.value == ""){
			f.phone1.focus();
			f.phone1.select();
			f.phone1.value = "##";
			return false;
		}
		if (f.phone2.value == ""){
			f.phone2.focus();
			f.phone2.select();
			f.phone2.value = "####";
			return false;
		}
		if (f.phone3.value == ""){
			f.phone3.focus();
			f.phone3.select();
			f.phone3.value = "####";
			return false;
		}
		if ((f.email.value==null)||(f.email.value=="")){
			f.email.value = "Enter your email address";
			f.focus();
			return false
		}
		if (echeck(f.email.value,f)==false){
			f.email.focus();
			f.email.select();
			return false
		}
		if (f.comments.value == ""){
			f.comments.focus();
			f.comments.select();
			f.comments.value = "Enter your comments";
			return false;
		}
		
	lsubmit(f);
	return false;
}

function employment(f)
	{
		if (f.firstname.value == ""){
			f.firstname.focus();
			f.firstname.select();
			f.firstname.value = "Enter your first name";
			return false;
		}
		if (f.lastname.value == ""){
			f.lastname.focus();
			f.lastname.select();
			f.lastname.value = "Enter your last name";
			return false;
		}
		if (f.phone1.value == ""){
			f.phone1.focus();
			f.phone1.select();
			f.phone1.value = "##";
			return false;
		}
		if (f.phone2.value == ""){
			f.phone2.focus();
			f.phone2.select();
			f.phone2.value = "####";
			return false;
		}
		if (f.phone3.value == ""){
			f.phone3.focus();
			f.phone3.select();
			f.phone3.value = "####";
			return false;
		}
		if ((f.email.value==null)||(f.email.value=="")){
			f.email.value = "Enter your email address";
			f.focus();
			return false
		}
		if (echeck(f.email.value,f)==false){
			f.email.focus();
			f.email.select();
			return false
		}
		if (f.comments.value == ""){
			f.comments.focus();
			f.comments.select();
			f.comments.value = "Enter your comments";
			return false;
		}
		
	lsubmit(f);
	return false;
}

function _body_onload(){loff();}
function _body_onunload(){lon();}