function checkContact() {	
	s = trimSpace($("#txtSender").val());	
	if(s.length>100 || s==""){
		alert('Please input fullname!');
		$("#txtSender").focus();
		return false;
	}
	//-----------------------------------------

	email = $("#txtFromMail").val();		
	if(email.length>0 && !isEmail(email)){			
		alert('Invalid Email\n Please Re-Enter!');
		$("#txtFromMail").focus();
		return false;
	}		
	s = trimSpace($("#txtSubject").val());	
	if(s.length>200 || s==""){
		alert('Please input subject!');
		$("#txtSubject").focus();
		return false;
	}
	//------------------------------------------------------
	s = trimSpace($("#txtContent").val());	
	if(s=="" || s.length>1000){
		alert('Please input message!');
		$("#txtContent").focus();
		return false;
	}	
	
	return true;
}

function sendContact(cat_id) {		
	if (checkContact()) {
		$.ajax({
		  type: "POST",
		  url: strPathTemplates + "modules/feedback/do.sql.php",
		  	data: {
				'act':			$('#act').val(),				  
				'txtSender': 	$('#txtSender').val(),
				'txtPhone': 	$('#txtPhone').val(),
				'txtAddress': 	$('#txtAddress').val(),  
				'txtFromMail': 	$('#txtFromMail').val(),
				'txtSubject': 	$('#txtSubject').val(),
				'txtContent': 	$('#txtContent').val(),
				'lang': lang
			},
		 	success: function(data) {
					$('#divForm').html('');	
					$('#divInfo').show();									
		  	},
		  	error: function() {
				alert("Co van de khi xu ly. Vui long thu lai sau!");
			}
		});
	}
}