var phpscriptNewsletter = 'newsletter/newsletter.php';

function createRequestObjectNewsletter()
{
	var reqNewsletter;
	
	try 
	{ 
		reqNewsletter = new ActiveXObject("Msxml2.XMLHTTP"); 
	} 
	catch (e) 
	{ 
		try 
		{ 
			reqNewsletter = new ActiveXObject("Microsoft.XMLHTTP"); 
		} 
		catch (E) 
		{ 
			try 
			{ 
				reqNewsletter = new XMLHttpRequest(); 
			} 
			catch (E) 
			{ 
				alert('ERRO: problema com javascript...Contacte geral@softowner.pt.');
			} 
		}	 
	} 
	
	return reqNewsletter;
}
	
var httpNewsletter = createRequestObjectNewsletter();

function newsletter() {

	var txtNewsletter = document.getElementById('txtNewsletterValue').value;

	httpNewsletter.open('post', phpscriptNewsletter);
	httpNewsletter.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	httpNewsletter.onreadystatechange = handleResponsePostNewsletter;
	httpNewsletter.send('txtNewsletter='+ txtNewsletter);

}

function handleResponsePostNewsletter() 
{
	if(httpNewsletter.readyState == 1)
	{} 
	else if(httpNewsletter.readyState == 4 && httpNewsletter.status == 200)
	{
		var responseNewsletter = httpNewsletter.responseText;
		document.getElementById('txtNewsletterValue').value = "";
		alert(responseNewsletter);
	}
}