function printvoucher(f){
	var err='',ok=true;
	if(!f.name.value.length) {
		err+="\nPlease enter your name";
		ok=false;
	}
	if(!/^[-a-zA-Z0-9_.+]+@[-a-zA-Z0-9_]+(\.[-a-zA-Z0-9_]+)+$/.test(f.email.value)) {
		err+="\nPlease enter your email address";
		ok=false;
	}
	if(ok) {
		window.open('freebies.php?p='+f.p.value+'&name='+escape(f.name.value)+'&subscribe='+(f.subscribe.checked?'1':'')+'&email='+escape(f.email.value),'printvoucher','width=300,height=100,scrolling=no');
	} else {
		alert("There was a problem with some of the information you entered"+err);
	}
	return false;
}