function valid(){
a = document.book;


if(a.nursery.value==""){
alert("Please enter Nursery");
a.nursery.focus();
return false;
}
if(a.preferredday.value==""){
alert("Please enter your Preferred Day");
a.preferredday.focus();

return false;
}
if(a.month.value==""){
alert("Please enter your Preferred Month");
a.month.focus();

return false;
}
if(a.year.value==""){
alert("Please enter your Preferred year");
a.year.focus();

return false;
}
if(a.time.value==""){
alert("Please enter your Preferred Time");
a.time.focus();

return false;
}
if(a.name.value==""){
alert("Please enter your Contact Name");
a.name.focus();

return false;
}
if(a.address1.value==""){
alert("Please enter your Postal Address");
a.address1.focus();

return false;
}
if(a.postcode.value==""){
alert("Please enter your Postal Code");
a.postcode.focus();
a.postcode.select();
return false;
}
if(a.telephone.value==""){
alert("Please enter your Telephone No");
a.telephone.focus();

return false;
}

if(a.email.value==""){
alert("Please enter your Email Address");
a.email.focus();

return false;
}
else
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	var returnval=emailfilter.test(document.book.email.value)
	if (returnval==false){
		alert("Please enter a valid email address.")
		
		return false;
}

if(a.dob_day.value==""){
alert("Please enter your Child's Date of Birth Day");
a.dob_day.focus();

return false;
}
if(a.dob_month.value==""){
alert("Please enter your Child's Date of Birth Month");
a.dob_month.focus();

return false;
}
if(a.dob_year.value==""){
alert("Please enter your Child's Date of Birth Year");
a.dob_year.focus();

return false;
}
if(a.childname.value==""){
alert("Please enter your Child's Name");
a.childname.focus();

return false;
}
if(a.where.value==""){
alert("Where did you hear about us?");
a.where.focus();

return false;
}

return true;
}
}