/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
var xmlhttp;
var innerHtmlOri;

function attivaImgNews()
{
		innerHtmlOri = document.getElementById("respRegNewsLetter").innerHTML;
    document.getElementById("respRegNewsLetter").innerHTML='<center><img src=\'images/loading.gif\' alt=\'Registrazione in corso...\'</center>';
}

function sendRegEmail(email)
{
    attivaImgNews();
    xmlhttp=GetXmlHttpObject();
    if (xmlhttp==null)
      {
      alert ("Browser does not support HTTP Request");
      return;
      }
    var url="/common/newsletterreg.php";
    url=url+"?email="+email;
    url=url+"&sid="+Math.random();
    xmlhttp.onreadystatechange=stateChangedNews;
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
}

function stateChangedNews()
{
    if (xmlhttp.readyState==4)
    {
        document.getElementById("respRegNewsLetter").innerHTML=xmlhttp.responseText;
    }
}

function GetXmlHttpObject()
{
    if (window.XMLHttpRequest)
      {
      // code for IE7+, Firefox, Chrome, Opera, Safari
      return new XMLHttpRequest();
      }
    if (window.ActiveXObject)
      {
      // code for IE6, IE5
      return new ActiveXObject("Microsoft.XMLHTTP");
      }
    return null;
}

function resetNews()
{
	document.getElementById("respRegNewsLetter").innerHTML=innerHtmlOri;
}

function checkMailNewsLetter(form)
{
	if(form.email.value=='' || form.email.value.indexOf('@')==-1)
	{
		alert('Inserire una email valida!');
		
	}
	else
	{
		form.inviomail.disabled='true';
		sendRegEmail(form.email.value);
	}
	return false;
}