function send() {
			
			if(!isEmpty()) {
				document.getElementById('empty_fields').style.display = 'block';
				return;
			} else document.getElementById('empty_fields').style.display = 'none';
			
			if(!verifyEmailAddress(document.getElementById('e_mail').value)) {
				document.getElementById('email_validate_error').style.display = 'block';
				return;
			}
			else	document.getElementById('email_validate_error').style.display = 'none';
				
			
			advAJAX.submit(
				document.getElementById('contactForm'), 
				{
					url: 'http://www.therapyairion.com/lib/sendmail.php',
					timeout: 3000,
					retry: 4,
					retryDelay: 2000,
					onRetryDelay : function(obj) { alert('Awaiting retry . . .')}, 
					onTimeout : function(obj) { alert('Connection timeout'); },
					onInitialize: function(obj) { alert('initialize'); },
					onError : function(obj) { alert('Error: ' + obj.responseText)},
					onFinalization: function(obj) {
						document.getElementById('formatka').style.display = 'none';
						document.getElementById('sendThx').style.display = 'block';
					}
				}
			);
		}	
		
		function isEmpty(elements) {
			
			if(document.getElementById('first_name').value.length == 0 ||
			document.getElementById('last_name').value.length == 0 ||
			document.getElementById('country').value.length == 0 ||
			document.getElementById('e_mail').value.length == 0 ||
			document.getElementById('comments').value.length == 0) 
				return 0;	
			else 
				return 1;		
		}	
		
		function verifyEmailAddress(email) {
		
			var regex = new RegExp('[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9]*[\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]');
			    		 
			 if(regex.test(email))  return true;
	
			return false;
		}