function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function PopupCentrata() {
   var w = 720;
   var h = 576;
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
      window.open("http://www.centrostudi.it/video.htm","","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l);
 }
 
 function CheckContatti(){
	var nome=new String(document.form1.nome.value);
	var cognome=new String(document.form1.cognome.value);
	var telefono=new String(document.form1.telefono.value);
	var email=new String(document.form1.email.value);

	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;

	if (nome == "") {
		alert('Specificare il nome');
		return false;
	} else if (cognome == "") {
		alert('Specificare il cognome');
		return false;
	} else if (telefono == "") {
		alert('Specificare il numero di telefono');
		return false;
	} else if (!email_reg_exp.test(email) || (email == "") || (email == "undefined")) {
		alert('Inserire un indirizzo mail valido');
		return false;
	} 
	
	return true;
}

 function CheckExAlunni(){
	var firstname=new String(document.form1.firstname.value);
	var lastname=new String(document.form1.lastname.value);
	var email=new String(document.form1.email.value);
	var phone=new String(document.form1.phone.value);
	var mobile=new String(document.form1.mobile.value);

	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;

	if (firstname == "") {
		alert('Specificare il nome');
		return false;
	} else if (lastname == "") {
		alert('Specificare il cognome');
		return false;
	} else if (phone == "" && mobile=="" && email=="") {
		alert('Specificare almeno un contatto tra telefono, cellulare oppure indirizzo email');
		return false;
	} else {
		if (mobile=="" && phone=="") {
			if (!email_reg_exp.test(email) || (email == "") || (email == "undefined")) {
				alert('Inserire un indirizzo mail valido');
			return false;
			}
		}
	} 
	
	return true;
}

 function CheckPostDiploma(){
	var firstname=new String(document.form1.firstname.value);
	var lastname=new String(document.form1.lastname.value);
	var email=new String(document.form1.email.value);
	var phone=new String(document.form1.phone.value);
	var mobile=new String(document.form1.mobile.value);

	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;

	if (firstname == "") {
		alert('Specificare il nome');
		return false;
	} else if (lastname == "") {
		alert('Specificare il cognome');
		return false;
	} else if (phone == "" && mobile=="" && email=="") {
		alert('Specificare almeno un contatto tra telefono, cellulare oppure indirizzo email');
		return false;
	} else {
		if (mobile=="" && phone=="") {
			if (!email_reg_exp.test(email) || (email == "") || (email == "undefined")) {
				alert('Inserire un indirizzo mail valido');
			return false;
			}
		}
	} 
	
	return true;
}