var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("Inserire il formato di data : gg/mm/aaaa")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Inserire un mese valido")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Inserire un giorno valido")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Immettere l'anno a quattro cifre compreso tra "+minYear+" e "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Inserire la data correttamente nel formato gg/mm/aaaa")
		return false
	}
return true
}

function OnlyDate(dt){
if (dt.value!="")
{
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
 }
  return true
}

function OnlyNumber(oggetto){	
	iLen1 = oggetto.value.length;
	sStr1 = oggetto.value;
	if (sStr1 != "") {
		for (i=0; i<iLen1; i++){
			sKey = sStr1.charCodeAt(i);
			if ((sKey < 48) || (sKey > 57)){					
				alert("Attenzione! Il campo accetta solo valori numerici!");
				oggetto.focus();
				oggetto.select();
				return false;
				break;
			}
		}
	}
	return true; 
}

function OnlyValuta(oggetto){ 
	iLen1 = oggetto.value.length;
	sStr1 = oggetto.value;
	virgole=0;
	
	if (sStr1 != "") {
		for (i=0; i<iLen1; i++){
			sKey = sStr1.charCodeAt(iLen1-i);
			if (((sKey < 48) || (sKey > 57)) && (sKey != 46) && (sKey != 44)){     
				alert("Attenzione! Questo campo accetta solo caratteri numerici o punteggiatura.");
				oggetto.focus();
				oggetto.select(); 
				return false;
				break;
			}
			if((sKey == 44) || (sKey == 46)){
				virgole= virgole +1;
			}
		}
		if (virgole > 1 ){
			alert("Attenzione! Sono stati inseriti  " + virgole + "  segni di punteggiatura.");
			oggetto.focus();
			oggetto.select();
			return false;
		}
	}
	return true; 
}

function OnlyFile(oggetto){	
	iLen1 = oggetto.value.length;
	sStr1 = oggetto.value;
	if (sStr1 != "") {
		for (i=0; i<iLen1; i++){
			sKey = sStr1.charCodeAt(i);
			if ((sKey == 92)||(sKey == 47)||(sKey == 58)||(sKey == 42)||(sKey == 63)||(sKey == 34)||(sKey == 60)||(sKey == 62)||(sKey == 124)){					
				alert("Attenzione! Il Campo non può contenere i seguenti caratteri:\n\\/:*?\"<>|");
				oggetto.focus();
				oggetto.select();
				return false;
				break;
			}
		}
	}
	return true; 
}

function OnlyEmail(oggetto){ 
	strMail = oggetto.value;
	
	if (strMail != ""){
		var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
		if (!email_reg_exp.test(strMail)) {
			alert("Attenzione! Indirizzo email non valido!");
			oggetto.focus();
			oggetto.select(); 
			return false;
		}
	}
	return true;
}

function emailCheck (emailStr){
	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
	if (!email_reg_exp.test(emailStr)) {
		return false;
	}
		
	return true;
	
}

function ControllaTitle(theForm){
	var alert_msgTitle ="";
	
	for(i=0;i<theForm.length;i++){		
		if (theForm[i].title){
			if (!theForm[i].value){
				alert_msgTitle = alert_msgTitle + "- "+ theForm[i].title +"\n";
			}
		}
	}
	
	if (alert_msgTitle!=""){
		alert ("Per proseguire è necessario completare i seguenti campi obbligatori:\n"+ alert_msgTitle);
		return false; 
	}else{
		return true; 
	}
}

// le prossime due funzioni sono legate
// Nella pagina in cui si andranno ad usare queste due funzioni bisognerà inserire la seguente scritta prima della fine dell'Head: "window.onload = startBlink;"
// successivamente bisognerà inserire il testo che si vuole far lampeggiare tra i tag <BLINK> 

function doBlink() {
	var blink = document.all.tags("BLINK")
	for (var i=0; i<blink.length; i++)
		blink[i].style.visibility = blink[i].style.visibility == "" ? "hidden" : "" 
}

function startBlink() {
	if (document.all)
		setInterval("doBlink()",500)
}

function ApriScheda(strUrl, popupName, intHeight, intWidth){
	if (strUrl == null || strUrl.Length <= 0)
		return;
	
	var Left = (screen.width) ? (screen.width-intWidth)/2 : 0;
	var Top = (screen.height) ? (screen.height-intHeight)/2 : 0;
	var strFeatures = "directories=no,location=no,menubar=no,top="+ Top +",left="+ Left +",scrollbars=yes,status=yes,resizable=yes,toolbar=no";
	
	if (intHeight != null)
		strFeatures += ",height="+intHeight;
	if (intWidth != null)
		strFeatures += ",width=" + intWidth;

	var theWindow = window.open( strUrl, popupName, strFeatures, false );
	theWindow.focus();
}
	
function popImage(imageURL,imageTitle){
	
	
	PositionX = 0;
	PositionY = 0;
	
	// Set these value approximately 20 pixels greater than the
	// size of the largest image to be used (needed for Netscape)
	
	defaultWidth  = 800;
	defaultHeight = 800;
	
	// Set autoclose true to have the window close automatically
	// Set autoclose false to allow multiple popup windows
	
	var AutoClose = true;	
	
	if (parseInt(navigator.appVersion.charAt(0))>=4){
		var isNN=(navigator.appName=="Netscape")?1:0;
		var isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;
	}
	var optNN='scrollbars=no,width='+defaultWidth+',height='+defaultHeight+',left='+PositionX+',top='+PositionY;
	var optIE='scrollbars=no,width=150,height=100,left='+PositionX+',top='+PositionY;
	
	if (isNN){imgWin=window.open('about:blank','',optNN);}
	if (isIE){imgWin=window.open('about:blank','',optIE);}
	with (imgWin.document){
		writeln('<html><head><title>Loading...</title>');
		writeln('<style>body{margin:0px;background-color: #000000}</style>');
		writeln('<sc'+'ript>');
		writeln('var isNN,isIE;');
		writeln('if (parseInt(navigator.appVersion.charAt(0))>=4){');
		writeln('isNN=(navigator.appName=="Netscape")?1:0;');
		writeln('isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;}');
		writeln('function reSizeToImage(){');writeln('if (isIE){');
		writeln('window.resizeTo(100,100);');
		//writeln('width=100-(document.body.clientWidth-document.images[0].width);');
		//writeln('height=100-(document.body.clientHeight-document.images[0].height);');
		//writeln('window.resizeTo(width,height);}');
		writeln('window.resizeTo(document.images[0].width + 12,document.images[0].height + 63);}');
		writeln('if (isNN){');
		writeln('window.innerWidth=document.images["George"].width;');
		writeln('window.innerHeight=document.images["George"].height;}}');
		writeln('function doTitle(){document.title="'+imageTitle+'";}');
		writeln('</sc'+'ript>');
	if (!AutoClose)
		writeln('</head><body bgcolor=000000 scroll="no" onload="reSizeToImage();doTitle();self.focus()">')
	else
		writeln('</head><body bgcolor=000000 scroll="no" onload="reSizeToImage();doTitle();self.focus()" onblur="self.close()">');
		writeln('<img name="George" src="'+imageURL+'" alt="©araldodeluca.com" style="display:block"></body></html>');
		close();
	}
}

function ImgReplace(id,sr){
var img=new Image();
img.src=sr;
FastReplace(id,sr,100);
}

function FastReplace(id,sr,tries){
if(tries<=0) return;
var el=document.getElementById(id);
var img=document.createElement("img");
img.src=sr;
img.border="0";
if(el && img.width){
 // img.alt=el.firstChild.nodeValue;
  //img.title=el.firstChild.nodeValue;
  el.replaceChild(img,el.firstChild);
  }
else
  setTimeout("FastReplace('"+id+"','"+sr+"',"+(--tries)+");",150);
}