function wpopup(imgname) 
{ 
var photo = "http://www.spain-conferences.com/hotels-photos/"+imgname+"b.jpg";
window.open(photo,"Conferences","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,width=350px,height=250px"); 
} 
function checkvals(){
	if(document.frm.fullname.value == ''){
			alert('Please enter your full name');
			return false;
	}
	if(document.frm.tel.value == '' && document.frm.email.value == ''){
			alert('Please enter either a contact phone number or email address');
			return false;
	}
	if(document.frm.comments.value == ''){
			alert('Please enter the nature of the enquiry in the subject box');
			return false;
	}
	return true;
}