// JavaScript Document
var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
function checkemail(e){
	var returnval=emailfilter.test(e)
	return returnval
}	

function Inint_AJAX() {
   try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {} //IE
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
   try { return new XMLHttpRequest(); } catch(e) {} //Native Javascript
   alert("XMLHttpRequest not supported");
   return null;
};

//----- Newsletter -----------------------------
function SendSubscribe(Email) {
	var frm=document.frmSubscribe;
	var txtEmail='Your email';
	
	if (frm.sEmail.value=='' || frm.sEmail.value==txtEmail) {
		alert('E-mail address is required!');
		frm.sEmail.focus();
	} else if (!checkemail(frm.sEmail.value)) {
		alert('Invalid e-mail address!');
		frm.sEmail.focus();
	} else {
		var req = Inint_AJAX();
		req.onreadystatechange = function () {
		  if (req.readyState==4) {
			if (req.status==200) {
			  var ret=req.responseText; //รับค่ากลับมา
			  //document.getElementById("result").innerHTML=ret;
			  alert(ret);
			  frm.sEmail.value=txtEmail;
			}
		  }
		};
		req.open("POST", "script-content.php"); //สร้าง connection
		req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); //header
		req.send("Email="+encodeURIComponent(Email)+"&content=subscribe"); //ส่งค่า
	}
	return false;
};