function validateform(){
	//alert("validateform()");
	if(!checkemail()) return false;

	//check that something is selected
	with (thisform){
		sel = (aylesbury[0].checked || aylesbury[1].checked
		|| amersham[0].checked || amersham[1].checked
		|| beaconsfield[0].checked || beaconsfield[1].checked
		|| chalfontstgiles[0].checked || chalfontstgiles[1].checked
		|| chalfontstpeter[0].checked || chalfontstpeter[1].checked
		|| chesham[0].checked || chesham[1].checked
		|| chorleywood[0].checked || chorleywood[1].checked
		|| cookham[0].checked || cookham[1].checked
		|| denham[0].checked || denham[1].checked
		|| gerrardscross[0].checked || gerrardscross[1].checked
		|| greatmissenden[0].checked || greatmissenden[1].checked
		|| hazlemere[0].checked || hazlemere[1].checked
		|| hemelhempstead[0].checked || hemelhempstead[1].checked
		|| highwycombe[0].checked || highwycombe[1].checked
		|| marlow[0].checked || marlow[1].checked
		|| princesrisborough[0].checked || princesrisborough[1].checked
		|| tring[0].checked || tring[1].checked
		|| wendover[0].checked || wendover[1].checked);
	}
	if (!sel){
		alert("No newsletters subscribed or unsubscribed!");
		return false;
	}
}


function checkemail(){
	//alert("checkemail()");
	if(thisform.email.value==""){
		alert("Please type your email address in the box");
		return false;
	}
	return true;
}

function selectall(i){
	with (thisform){
		amersham[i].checked=true;
		aylesbury[i].checked=true;
		beaconsfield[i].checked=true;
		chalfontstgiles[i].checked=true;
		chalfontstpeter[i].checked=true;
		chesham[i].checked=true;
		chorleywood[i].checked=true;
		cookham[i].checked=true;
		denham[i].checked=true;
		gerrardscross[i].checked=true;
		greatmissenden[i].checked=true;
		hazlemere[i].checked=true;
		hemelhempstead[i].checked=true;
		highwycombe[i].checked=true;
		marlow[i].checked=true;
		princesrisborough[i].checked=true;
		tring[i].checked=true;
		wendover[i].checked=true;
	}
}