function controlNewsletter (CampoEmail) {

    if (testEmail(CampoEmail, true)) {
        document.frm_newsletter.submit();
        return true;
    }
    alert('Attenzione\n\nL\'indirizzo email inserito non è valido')
    return false;
    
}

function controlfield(campo,strcampo){
	objcampo = eval(campo)
	valore = objcampo.value
	valore = valore.replace(" ","")
	if (valore==""){
		alert("Il campo " + strcampo + " è obbligatorio");
		objcampo.value = valore;
		objcampo.focus();
		return false;
	}
	else{
		return true;
	}
}

function RemoveBad(strTemp) { 
    strTemp = strTemp.replace(/\<|\>|\"|\'|\%|\;|\(|\)|\&|\+|\-/g,""); 
    return strTemp;
} 

function ControlloCaratteri (strTemp) {

        var espressione = new RegExp("^[A-Za-z0-9]+$");
        var stringa = strTemp;
        return (espressione.test(stringa))
        {
          return false;
        }
       return true;
}

function testEmail(oggTextfield, boolObbligatorio) {
    oggTextfield.value = oggTextfield.value.replace(/\s+$|^\s+/g,"")

    if (oggTextfield.value == "")
        if (boolObbligatorio)
	        return false
        else
	        return true
	        
    var re = /^[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)*@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_]+)*\.[a-zA-Z]{2,}$/g
    return(re.test(oggTextfield.value))
}

function apriWin(Indirizzo,Larg,Alt,Nome){
	var top = 0;
	var left = 0;
		var w=Larg;
		var h=Alt;
		var sUrl = Indirizzo
		if (screen.width > w) left = (screen.width - w) / 2;
		if (screen.height > h) top = (screen.height - h) / 2;
		var sFeatures="width=" + w + ",height=" + h + ",left=" + left +",top=" + top+ ",resizable=no,menubar=no,directories=no,toolbar=no,scrollbars=yes";
		//alert(sFeatures)
	var win = window.open(sUrl,Nome,sFeatures);
	if (navigator.appName != 'Microsoft Internet Explorer')  { if ( window.focus )  win.focus()};
	win.focus();
	return;
}

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

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to 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){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    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(pos1+1,pos2)
	//var strMonth=dtStr.substring(0,pos1)
	
	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("Il formato della data deve essere : dd/mm/yyyy")
		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 corretto")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("L'anno deve essere compreso tra "+minYear+" e "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Inserire una data valida")
		return false
	}
return true
}