function checkformdangdy()
{
	re = /(\w+)@(\w+)\.(\w+)/;
	re1 = /0(\d+)/;
	
	/*if (document.formdangky.email.value!="" && (document.formdangky.email.value.indexOf('@',0)==-1 || document.formdangky.email.value.indexOf('.')==-1))
	{
		alert ("Ð?a ch? E-mail không h?p l?");
		document.formdangky.email.focus();
		return (false);
	}*/
		
	if (document.formdangky.fname.value == "")
	{
		alert("Ban hay nhap ho va ten dem cua ban");
		document.formdangky.fname.focus();
		return false;
	}
	if (document.formdangky.lname.value.length==0)
	{
		alert("Ban hay nhap ten cua ban");
		document.formdangky.lname.focus();
		return false;
	}
	if (document.formdangky.ngaysinh.value.length==0)
	{
		alert("Ban chua nhap ngay sinh");
		document.formdangky.ngaysinh.focus();
		return false;
	}
	if (document.formdangky.thang.value.length==0)
	{
		alert("Ban chua nhap thang sinh");
		document.formdangky.thang.focus();
		return false;
	}
	if (document.formdangky.nam.value.length==0)
	{
		alert("Ban chua nhap nam sinh");
		document.formdangky.nam.focus();
		return false;
	}
	if (document.formdangky.address.value.length==0)
	{
		alert("Ban hay nhap vao dia chi cua ban");
		document.formdangky.address.focus();
		return false;
	}
	if (document.formdangky.province.value == "")
	{
		alert("Hay chon tinh thanh noi ban dang song");
		document.formdangky.province.focus();
		return false;
	}
	if(!re.test(document.formdangky.email.value)){
		alert("Email khong hop le !");
		document.formdangky.email.focus();
		return false;
		}
	if (document.formdangky.phone.value != ""){
	if(!re1.test(document.formdangky.phone.value)){
			alert("So dien thoai khong hop le !")
			document.formdangky.phone.focus();
			return false;
		}	
	}
	if (document.formdangky.email.value.length==0)
	{
		alert("Ban hay nhap vao email cua ban");
		document.formdangky.email.focus();
		return false;
	}
	if (document.formdangky.username.value.length==0)
	{ 
		alert("Ban hay nhap nick name ban muon su dung khi dang nhap");
		document.formdangky.username.focus();
		return false;
	}
	if (document.formdangky.pass.value.length==0)
	{
		alert("Ban hay nhap password khi dang nhap");
		document.formdangky.pass.focus();
		return false;
	}
	if (document.formdangky.pass1.value.length==0)
	{
		alert("Ban phai nhap lai password");
		document.formdangky.pass1.focus();
		return false;
	}
	if (document.formdangky.pass.value.length<6)
	{
		alert("Password cua ban phai co it nhat 6 ky tu");
		document.formdangky.fname.focus();
		return false;
	}
	if (document.formdangky.pass.value!=document.formdangky.pass1.value)
	{
		alert("Password nhap lai khong giong password da nhap, hay thuc hien lai");
		document.formdangky.pass1.focus();
		return false;
	}
/*	if (document.formdangkylogo.phone.value!="")
	{
		if (parseInt(document.formdangkylogo.phone.value) != document.formdangkylogo.phone.value)
		{
			alert ("Ban phai nhap vao cac chu so");
			document.formdangkylogo.phone.focus();
			document.formdangkylogo.phone.select();
			return false;
		}
	}*/
}
function checkformdangdylogo()
{
	re = /(\w+)@(\w+)\.(\w+)/;
	re1 = /0(\d+)/;
	re1fax = /0(\d+)/;
	
	/*if (document.formdangkylogo.email.value!="" && (document.formdangkylogo.email.value.indexOf('@',0)==-1 || document.formdangkylogo.email.value.indexOf('.')==-1))
	{
		alert ("Ðia chi email khong hop le");
		document.formdangkylogo.email.focus();
		return (false);
	}*/
	if(!re.test(document.formdangkylogo.email.value)){
		alert("Email khong hop le !");
		document.formdangkylogo.email.focus();
		return false;
		}
	if (document.formdangkylogo.fname.value == "")
	{
		alert("Ban hay nhap ho ten cua ban");
		document.formdangkylogo.fname.focus();
		return false;
	}
	if (document.formdangkylogo.address.value.length==0)
	{
		alert("Ban hay nhap vao dia chi cua ban");
		document.formdangkylogo.address.focus();
		return false;
	}
	if(!re1.test(document.formdangkylogo.phone.value)){
			alert("So dien thoai khong hop le !")
			document.formdangkylogo.phone.focus();
			return false;
		}	
	if(!re1fax.test(document.formdangkylogo.fax.value)){
			alert("So fax khong hop le !")
			document.formdangkylogo.fax.focus();
			return false;
		}
	if (document.formdangkylogo.email.value.length==0)
	{
		alert("Ban hay nhap vao email cua ban");
		document.formdangkylogo.email.focus();
		return false;
	}
	if (document.formdangkylogo.homepage.value.length==0)
	{
		alert("Ban hay nhap vao dia chi website cua ban");
		document.formdangkylogo.homepage.focus();
		return false;
	}
	if (document.formdangkylogo.loailogo.value =="")
		{
			alert("Ban hay chon loai logo");
			document.formdangkylogo.loailogo.focus();
			return false;
		}
	if (document.formdangkylogo.cap1.value =="")
		{
			alert("Ban hay up anh cho logo");
			document.formdangkylogo.cap1.focus();
			return false;
		}
}
function checkformdangtin()
{
	if (document.formdangkylogo.loaitin.value == "")
	{
		alert("Hay nhap loai tin ma ban muon dang");
		document.formdangkylogo.loaitin.focus();
		return false;
	}
	if (document.formdangkylogo.noidung.value == "")
	{
		alert ("Ban phai co thong tin gioi thieu ve san pham cua minh");
		document.formdangkylogo.noidung.focus();
		return false;
	}
	if (document.formdangkylogo.ngay.value =="")
		if (document.formdangkylogo.thang.value =="")
		{
			alert("Ban phai nhap vao thoi han ban muon luu tin tren website");
			document.formdangkylogo.ngay.focus();
			return false;
		}
}
function checkformdangkyshop()
{
	if (document.formdangkylogo.tenshop.value == "")
	{
		alert("Hay nhap ten cua hang cua ban");
		document.formdangkylogo.tenshop.focus();
		return false;
	}
	if (document.formdangkylogo.anh.value == "")
	{
		alert ("Hay up banner hoac logo cho cua hang");
		document.formdangkylogo.anh.focus();
		return false;
	}
	if (document.formdangkylogo.thoihan.value =="")
		{
			alert("Ban phai chon thoi han duy tri cua hang tren website");
			document.formdangkylogo.thoihan.focus();
			return false;
		}
}

function checkformContact()
{
	if (document.FContact.txtemail.value!="" && (document.FContact.txtemail.value.indexOf('@',0)==-1 || document.FContact.txtemail.value.indexOf('.')==-1))
	{
		alert ("Dia chi email khong hop le");
		document.FContact.txtemail.focus();
		return (false);
	}
	if (document.FContact.txtten.value == "")
	{
		alert("Hay nhap ten cua hang cua ban");
		document.FContact.txtten.focus();
		return false;
	}
	if (document.FContact.txtemail.value == "")
	{
		alert ("Ban chua dien dia chi Email lien he");
		document.FContact.txtemail.focus();
		return false;
	}
	if (document.FContact.txtnoidung.value =="")
		{
			alert("Ban hay dien thong tin noi dung can lien he");
			document.FContact.txtnoidung.focus();
			return false;
		}
}
function back2previous()
{
	javascript:history.back();
}