var frm = document.frm_register;
	function check_user_infomation() {
		if (frm.txt_username.value==""){
			alert("Ban hay chon nhung so tuy thich tu 0 den 9 !");
			frm.txt_username.focus();
			return false;
		}
		
		if (!IsNumeric(frm.txt_username.value)){
			alert("Ban hay chon nhung so tuy thich tu 0 den 9 !");
			frm.txt_username.focus();
			return false;
		}
		
		if (frm.txt_password.value==""){
			alert("Vui long nhap mat khau !");
			frm.txt_password.focus();
			return false;
		}	
		
		if (frm.txt_typing_again.value==""){
			alert("Vui long go lai mat khau !");
			frm.txt_typing_again.focus();
			return false;
		}	
		
		if (frm.txt_password.value != frm.txt_typing_again.value){
			alert("Ban go lai mat khau chua chinh xac !");
			frm.txt_typing_again.focus();
			return false;
		}	
		
		if (frm.txt_firstname.value==""){
			alert("Vui long nhap ten cua ban !");
			frm.txt_firstname.focus();
			return false;
		}		
		
		if (frm.txt_phone.value==""){
			alert("Vui long nhap so dien thoai cua ban !");
			frm.txt_phone.focus();
			return false;
		}
		
		if (frm.txt_email.value==""){
			alert("Vui long nhap email !");
			frm.txt_email.focus();
			return false;
		}			
				
		if (!isEmail(frm.txt_email.value)){
			alert("Email ban nhap vao chua dung !");
			frm.txt_email.focus();
			return false;
		}	
		
		if (frm.chk_agree.checked != true){
			alert("Ban phai dong y voi tat ca cac dieu khoan cua golddaily dua ra truoc khi tiep tuc dang ky !");
			frm.chk_agree.focus();
			return false;
		}
		
		return true;
	}