function check()
		{
			var message_check = 'Please check the following fields. \r\n';
			var n = 0;
			var proceed = 1;
			if(document.getElementById('from').value.trim()!='')
			{
				var chosen = document.getElementById('from').value.trim();
						
				if(!chosen.match(/.*@.*\..*/))
				{ 
						message_check += ++n+'. A Valid Email Address \r\n';
						proceed = 0;
				}
			}
			else
				message_check += ++n+'. From \r\n';
			
			if(document.getElementById('subject').value.trim()=='')
			{ 
				message_check += ++n+'. Subject \r\n';
				proceed = 0;
			}
			if(document.getElementById('message').value.trim()=='')
			{ 
				message_check += ++n+'. message \r\n';
				proceed = 0;
			}
			if(proceed == 0)
				alert(message_check);
			else
				sendMail();
		}
		
		function sendMail()
		{
			var to = document.getElementById('country').value.trim();
			var from = document.getElementById('from').value.trim();
			var subject = document.getElementById('subject').value.trim();
			var message = document.getElementById('message').value.trim();
			
			pars = 'to='+to+'&from='+from+'&subject='+subject+'&message='+message;
			new Ajax.Request('mail_user.php',{ method:'get',
															parameters:pars,
															onSuccess:function(t)
															{
																alert(t.responseText);
																document.getElementById('from').value = '';
																document.getElementById('subject').value = '';
																document.getElementById('message').value = '';
															},
															onFailure:function()
															{
																alert('Something wrong in sendMail()');
															}
									});
		}