function checkForm() {
		var frm = document.frmFeedback;
		if (trim(frm.name.value) == "") {
			alert("Vui long nhap ho ten cua ban!");
			frm.name.focus();
			return false;
		}
		if (trim(frm.email.value) == "") {
			alert("Vui long nhap dia chi email cua ban!");
			frm.email.focus();
			return false;
		} else {
			var email=frm.email.value;
			var emailPat = /^(\".*\"|[A-Za-z]\w*)@(\[\d{1,3}(\.\d{1,3}){3}]|[A-Za-z]\w*(\.[A-Za-z]\w*)+)$/;
			var matchArray = email.match(emailPat);
			if (matchArray == null) {
				alert("Dia chi email khong hop le!");
				frm.email.focus();
				return false;
			}
		}
		if (trim(frm.content.value) == "") {
			alert("Vui long nhap noi dung!");
			frm.content.focus();
			return false;
		}
		if (trim(frm.content.value) == "") {
			alert("Vui long nhap noi dung!");
			frm.content.focus();
			return false;
		}
		//alert(frm.hidcaptc.value);
		if (trim(frm.captchacode.value) == "") {
			alert("Vui long nhap ma bao ve!");
			frm.captchacode.focus();
			return false;
		}
		
		$.ajax({
				type:"POST", url: "modules/discussion/dopage.asp",
				data:{
					'isNew':	'add',
					'name':		frm.name.value,
					'title':	frm.title.value,
					'email':	frm.email.value,
					'content':	frm.content.value,
					'code':		frm.captchacode.value,
					'catid': 	frm.hidcatid.value,
					'id': 		frm.hidid.value
				},
				success: function(data) {
					if (data.indexOf("err") == -1) {
						$('#formContent').html(data) ;
					} else {
						//$("#msgError").show();
						document.getElementById("msgError").style.display = '';
					}
				},
				errror: function(data) {
					alert(data) ;
				}
		});
	}
function RefreshImage(valImageId) {
	var objImage = document.images[valImageId];
	if (objImage == undefined) {
		return;
	}
	var now = new Date();
	objImage.src = objImage.src.split('?')[0] + '?x=' + now.toUTCString();
}
//------------------------------------------------------
$(document).ready(function(){								
		Page(1,5); // phan trang
	});
//pagging
function Page(p,s)
{
	$(document).ready(function(){
		$('#NewsLoading').html("<center><img src='./images/loading.gif'> <br><font style='font:12px verdana;font-weight:bold'>&#272;ang t&#7843;i d&#7919; li&#7879;u...</font></center><br>") ;
		$('#page').val(p);
		$('#size').val(s);
		id = $('#hidid').val();//luu gia tri trang hien tai
		$('#NewsLoading').load("modules/discussion/comment.asp",{'p':p,'s':s,'id':id});
	});
}