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_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_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 checkForm(f) {
    var msgForm = validForm(f);
    if(msgForm == "OK") {
        f.submit();
    }
    else {
        alert (msgForm);
    }
}

function checkFormSec(f) {
    var msgForm = validForm(f);
    var urlAction = "";
    //alert ("Actual action: " + f.action);
    if(msgForm == "OK") {
        urlAction = f.loc.value + "." + f.ext.value;
        f.action = urlAction;
        //alert ("Submit to: " + f.action);
        //alert ("urlAction: " + urlAction);
        
        f.submit();
    }
    else {
        alert (msgForm);
    }
}

function validForm(f) {
    for(i=0; i<f.length; i++) {
        fieldType = f.elements[i].type;
        fieldValue = f.elements[i].value;
        fieldDesc = f.elements[i].title;
        fieldName = f.elements[i].name;
        if(fieldType == "text" || fieldType == "password" || fieldType == "textarea") {
            if(fieldValue == "")
                return "Il campo " + fieldDesc + " non puņ essere vuoto.";
        }
        if(fieldName == "email") {
            if(!validEmail(fieldValue))
                return "Per favore inserisci un indirizzo e-mail valido";
        }
    }
    return "OK";
}

function validEmail(emailAddr) {
   filtro = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
   if (filtro.test(emailAddr))
      return true;
   else {
      return false;
   }
}