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 Call_MM_preloadImages(lang) {
	if (lang = "ITA") {
		MM_preloadImages('../images/layout/btn/btn_home_ov.gif','../images/layout/btn/btn_legend2008_ov.gif','../images/layout/btn/btn_storia_ov.gif','../images/layout/btn/btn_albo_ov.gif','../images/layout/btn/btn_dicono_ov.gif','../images/layout/btn/btn_foto_ov.gif','../images/layout/btn/btn_video_ov.gif','../images/layout/btn/btn_link_ov.gif','../images/layout/btn/btn_contatti_ov.gif','../images/layout/btn/btn_partner_ov.gif');
	}
	else if (lang = "ENG") {
		MM_preloadImages('../images/layout/btn/btn_home_ov.gif','../images/layout/btn/btn_legend2008_ov.gif','../images/layout/btn/btn_storia_ENG_ov.gif','../images/layout/btn/btn_albo_ENG_ov.gif','../images/layout/btn/btn_dicono_ENG_ov.gif','../images/layout/btn/btn_foto_ov.gif','../images/layout/btn/btn_video_ov.gif','../images/layout/btn/btn_link_ENG_ov.gif','../images/layout/btn/btn_contatti_ENG_ov.gif','../images/layout/btn/btn_partner_ENG_ov.gif');
	}
}

function shot(str,w,h,scr) {    
	l = (screen.width - w) / 2;
	t = (screen.height - h) / 2;
	searchWin = window.open(str,'','scrollbars='+ scr + ',resizable=no, width='+ w + ', height='+ h + ', top='+ t + ', left='+ l + ', status=no, location=no, toolbar=no, title=ciao');
}

//Mostra/nasconde un elemento <div>
function swapDisplay(block){
	var strdiv;
	
	strdiv = document.getElementsByTagName('div');
	for (i=0;i<strdiv.length;i++) {
		if (strdiv[i].id.indexOf(block) !=-1) {
			if (strdiv[i].id == block) {
				if (strdiv[i].className == 'hidden') {
					strdiv[i].className ='display'
				} else {
					strdiv[i].className ='hidden'
				}
			}
		}
	}
	return false;
}

// called on focus of user login form
function HandleUsername(untb)
{
	var usernameTranslation = 'Nome utente';
	if(untb.value == usernameTranslation)
	{
		untb.value='';
	}
}

/**
 * Logout dell'utente
 */
function logout() 
{
	document.location = "action/logout.php";
}

function checkQuery() {
	var ret=true;
	if(document.forms['mailform'].elements['MailNome'].value=="") {
		ret=false;
		document.forms['mailform'].elements['MailNome'].focus();
		alert("Si prega di inserire il nome.");
		return ret;
	}
	if(document.forms['mailform'].elements['MailEmail'].value=="") {
		ret=false;
		document.forms['mailform'].elements['MailEmail'].focus();
		alert("Si prega di inserire il proprio indirizzo e-mail.");
		return ret;
	}
	if(document.forms['mailform'].elements['MailOggetto'].value=="") {
		ret=false;
		document.forms['mailform'].elements['MailOggetto'].focus();
		alert("Si prega di inserire l'oggetto del messaggio.");
		return ret;
	}
	if(document.forms['mailform'].elements['MailTesto'].value=="") {
		ret=false;
		document.forms['mailform'].elements['MailTesto'].focus();
		alert("Si prega di inserire il testo del messaggio.");
	}
	return ret;
}

function changeSezione(n, totsezioni) {
	for (i=1; i<=totsezioni; i++){
		if (i!=n) myVerticalSlide[i].slideOut('vertical');
	}
	myVerticalSlide[n].toggle('vertical');
}

function changeSfondo(file) {
	document.getElementById('body').style.backgroundImage = 'url('+file+')';
}

function SistemaOperativo() {
   if (navigator.userAgent.indexOf("Win") != -1) {
       var mostra = "Windows";
   }
   else if (navigator.userAgent.indexOf("Mac") != -1) {
       var mostra = "Apple Mac";
   }
   else if (navigator.userAgent.indexOf("Linux") != -1) {
   	   var mostra = "Linux";
   }
   else {
       var mostra = "not specified";
   }
   return mostra;
}