function back(){
    history.go(-1);
}

function Trim(orgString){
  return LTrim(RTrim(orgString))
}

function LTrim(orgString){
  return orgString.replace(/^\s+/,'')
}

function RTrim(orgString){
  return orgString.replace(/\s+$/,'')
}

function NewWindow(titoloFinestra, pathImmagine) {
	window.open("/view/jsp/immagine.jsp?titolo=" + titoloFinestra + "&path=" + pathImmagine, "NewWindow", "toolbar=no,directories=no,menubar=no,status=no,scrollbars=yes,resizable=yes,width=750,height=550");
}

function controllaTestoRicerca(form) {
  if (Trim(form.txtRicerca.value)=="") {
    alert("ATTENZIONE: per effetuare la ricerca e' necessario" + "\n" + "digitare i criteri di ricerca.");
    form.txtRicerca.focus();
    return false;
  } 
  else {
  	return true;
  }
}

function checkCampoObbligatorio(par_txtCampo, par_sLabelCampo) {
  if (Trim(par_txtCampo.value)=="") {
    alert(par_sLabelCampo + ": campo obbligatorio.");
    par_txtCampo.focus();   
    return false;
  } 

  return true;
}

function stampaFinestra() {
  window.print()
}

function impostaFocusCampo(campo) {
  campo.focus();   
  return;
}

function emailCheck(txtEmail) {
	 
	/* The following pattern is used to check if the entered e-mail address
	   fits the user@domain format.  It also is used to separate the username
	   from the domain. */
	var emailPat=/^(.+)@(.+)$/
	/* The following string represents the pattern for matching all special
	   characters.  We don't want to allow special characters in the address. 
	   These characters include ( ) < > @ , ; : \ " . [ ]    */
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	/* The following string represents the range of characters allowed in a 
	   username or domainname.  It really states which chars aren't allowed. */
	var validChars="\[^\\s" + specialChars + "\]"
	/* The following pattern applies if the "user" is a quoted string (in
	   which case, there are no rules about which characters are allowed
	   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	   is a legal e-mail address. */
	var quotedUser="(\"[^\"]*\")"
	/* The following pattern applies for domains that are IP addresses,
	   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	   e-mail address. NOTE: The square brackets are required. */
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	/* The following string represents an atom (basically a series of
	   non-special characters.) */
	var atom=validChars + '+'
	/* The following string represents one word in the typical username.
	   For example, in john.doe@somewhere.com, john and doe are words.
	   Basically, a word is either an atom or quoted string. */
	var word="(" + atom + "|" + quotedUser + ")"
	// The following pattern describes the structure of the user
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	/* The following pattern describes the structure of a normal symbolic
	   domain, as opposed to ipDomainPat, shown above. */
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
	
	/* Finally, let's start trying to figure out if the supplied address is
	   valid. */
	
	/* The following pattern is used to check if the entered e-mail address
	   fits the user@domain format.  It also is used to separate the username
	   from the domain. */
	var emailPat=/^(.+)@(.+)$/
	/* The following string represents the pattern for matching all special
	   characters.  We don't want to allow special characters in the address. 
	   These characters include ( ) < > @ , ; : \ " . [ ]    */
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	/* The following string represents the range of characters allowed in a 
	   username or domainname.  It really  pattern to simply break up user@domain into
	   different pieces that are easy to analyze. */
	
	var emailStr = txtEmail.value;
	if (Trim(emailStr)=="") {
		return true;
  	} 
	
	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
	  /* Too many/few @'s or something; basically, this address doesn't
		 even fit the general mould of a valid e-mail address. */
		alert("Indirizzo email non corretto (check @)!");
		txtEmail.focus();
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	
	// See if "user" is valid 
	if (user.match(userPat)==null) {
		// user is not valid
		alert("Username non valido.")
		txtEmail.focus();
		return false
	}
	
	/* if the e-mail address is at an IP address (as opposed to a symbolic
	   host name) make sure the IP address is valid. */
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		// this is an IP address
		  for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				alert("L'IP address destinazione non è valido!");
				txtEmail.focus();
				return false;
			}
		}
		return true
	}
	
	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("Il nome di dominio sembra non essere valido.")
		txtEmail.focus();
		return false
	}
	
	/* domain name seems valid, but now make sure that it ends in a
	   three-letter word (like com, edu, gov) or a two-letter word,
	   representing country (uk, nl), and that there's a hostname preceding 
	   the domain or country. */
	
	/* Now we need to break up the domain to get a count of how many atoms
	   it consists of. */
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
		domArr[domArr.length-1].length>3) {
	   // the address must end in a two letter or three letter word.
	   alert("Le ultime lettere dell'indirizzo email sono 2 nel caso di un paese o 3 nel caso di un dominio.")
	   txtEmail.focus();
	   return false
	}
	
	// Make sure there's a host name preceding the domain.
	if (len<2) {
	   alert("Questo indirizzo email è privo dell'hostname!");
	   txtEmail.focus();
	   return false
	}
	
	// If we've gotten this far, everything's valid!
	return true;
}

function controlloData(par_dtData) {
	var re = new RegExp("^(?:(?:31(\\/|-|\\.)(?:0?[13578]|1[02]))\\1|(?:(?:29|30)(\\/|-|\\.)(?:0?[1,3-9]|1[0-2])\\2))(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$|^(?:29(\\/|-|\\.)0?2\\3(?:(?:(?:1[6-9]|[2-9]\\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\\d|2[0-8])(\\/|-|\\.)(?:(?:0?[1-9])|(?:1[0-2]))\\4(?:(?:1[6-9]|[2-9]\\d)?\\d{2})$");
	return re.test(par_dtData);
}

 
function controlloNumericita(campo){
	 if ( campo == "" )    {
			
			return ( false );
	 }
	 var cifre= "0123456789.";
	 var verifica= campo;
	 var allValid = true;

	 var allNum = "";
	 for ( i = 0; i < verifica.length; i++ )
	 {
			ch = verifica.charAt( i );
			for ( j = 0; j < cifre.length; j++ )
			 if ( ch == cifre.charAt( j ))
					break;
			if ( j == cifre.length )
			{
			 allValid = false;
			 break;
			}
			allNum += ch;
	 }
	if (!allValid){
		return false;
	 }
	return true;
}


function spazioInStringa(stringaTest) {
	if (stringaTest.indexOf(" ") != -1) {
		return true;
	}
	
	return false;
}

function apriFinestra(url,x,y,flag_controllo,flag_toolbar, flag_resizable){
	//flag_controllo "yes" = viene eseguito il controllo di apertura finestre multiple
	//flag_toolbar "yes" "no"
	var server="";
	var parametri = "hotkeys=no,location=no,menubar=no,personalbar=no,location=no,toolbar="+flag_toolbar+",resizable="+flag_resizable+",top=0,left=0,scrollbars=yes,status=yes,width="+x+",height="+y;
	if (flag_controllo=="yes"){
		if (windowClosed()){
			win1 = window.open (server+url,"",parametri);
		}
		else{
			win1.focus();
		}
	}
	else{
		win1 = window.open (server+url,"",parametri); 
	}
}

function apriFinestraModale(url, x , y, center){
	window.showModalDialog(url, null, "dialogWidth:" + x + "; dialogHeight:" + y +"; center:" + center);
}