function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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 exchangeDisplay(id){
 if(document.getElementById(id).style.display == 'none')
 {
  document.getElementById(id).style.display = 'block';
 }
 else
 {
  document.getElementById(id).style.display = 'none';
 }
}

function validEmail(email){
	invalidChars="/:,;"
	if (email==""){
		return false;
	}
	for (i=0; i<invalidChars.length;i++){
	badChar=invalidChars.charAt(i)	
	if (email.indexOf(badChar,0)>-1){
		return false;
		}
	}
	atPos=email.indexOf("@",1)
	if (atPos==-1){
		return false;	
	}
	if (email.indexOf("@",atPos+1)>-1){
		return false;	
	}
	periodPos=email.indexOf(".",atPos)
	if (periodPos==-1){
		return false;
	}
	if (periodPos+3>email.length){
		return false;	
	}
	return true	
}

function Validator(theForm){
	if (theForm.nome.value == "") {
		alert("Inserire un valore nel campo \"Nome\".");
		theForm.nome.focus();
		return (false);
	}
	
	if (theForm.citta.value == "") {
		alert("Inserire un valore nel \"Cittā'\".");
		theForm.citta.focus();
		return (false);
	}
	
	telefono = theForm.telefono.value;
	if (theForm.telefono.value!=""){
		if ( isNaN(telefono)){
			alert("Ricontrolla il campo \"Telefono'\".");
			theForm.telefono.focus();
			return (false);
		}	
	}
	else {
		alert('Non hai inserito il numero di telefono');
		theForm.telefono.focus();
		return (false);	
	}
	
	if (!validEmail(theForm.email.value)){
		alert('Non hai inserito L\'indirizzo E-mail o quello inserito non č valido');
		theForm.email.focus();
		return (false);
	}

	if (theForm.orario.value == "") {
		alert("Inserire un valore nel campo \"Orario'\".");
		theForm.orario.focus();
		return (false);
	}
		return true;
}