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 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 validate_form() {
  validity = true; // assume valid
  if (!check_empty(document.form.nome.value))
  	{ validity = false; alert('Name field is empty!'); }
  if (!check_empty(document.form.cognome.value))
  	{ validity = false; alert('Last Name field is empty!'); }
  if (!check_email(document.form.email.value))
  	{ validity = false; alert('Email address is invalid!'); }
  if (!check_empty(document.form.telefono.value))
  	{ validity = false; alert('Phone field is empty!'); }
  if (validity)
  	alert ("THANK YOU."
  		+ "We will send you further information"
  		+ " as soon as possible.");
  return validity;
}
function check_empty(text) {
  return (text.length > 0); // returns false if empty
}
function check_email(address) {
  if ((address == "")
    || (address.indexOf ('@') == -1)
    || (address.indexOf ('.') == -1))
      return false;
  return true;
}
function validate_form2() {
  validity = true; // assume valid
  if (!check_empty(document.form.nome.value))
  	{ validity = false; alert('Name field is empty!'); }
  if (!check_empty(document.form.cognome.value))
  	{ validity = false; alert('Last Name field is empty!'); }
  if (!check_email(document.form.email.value))
  	{ validity = false; alert('Email address is invalid!'); }
  if (validity)
  	alert ("THANK YOU."
  		+ "We will send you further information"
  		+ " as soon as possible.");
  return validity;
}

function validate_form3() {
  validity = true; // assume valid
  if (!check_empty(document.form.nome.value))
  	{ validity = false; alert('Il campo nome non è compilato'); }
  if (!check_empty(document.form.cognome.value))
  	{ validity = false; alert('Il campo cognome non è compilato'); }
  if (!check_email(document.form.email.value))
  	{ validity = false; alert('Indirizzo e-mail non valido'); }
  if (validity)
  	alert ("Grazie per aver contattato Regency.");
  return validity;
}