function chkFld(inArr, inObjForm)
{
	var strErr = "";
	var strMsg = "";

	for(var i=0; i<inArr.length; i+=3)
	{
		k = i;
		if(inArr[k+2] == "string")
			strErr += chkIfString(inObjForm.elements[inArr[k]].value, inArr[k+1]);
		else if(inArr[k+2] == "integer")
			strErr += chkIfNumber(inObjForm.elements[inArr[k]].value, inArr[k+1]);
		else if(inArr[k+2] == "date")
			strErr += chkIfDate(inObjForm.elements[inArr[k]].value, inArr[k+1]);
		else if(inArr[k+2] == "empty")
			strErr += chkIfEmpty(inObjForm.elements[inArr[k]].value, inArr[k+1]);
		else if(inArr[k+2] == "mail")
			strErr += chkIfEMail(inObjForm.elements[inArr[k]].value, inArr[k+1]);
	}

	if(strErr != "")
	{
		strMsg += "Attenzione! L\'operazione verra\' annullata poiche\' si sono \n";
		strMsg += "verificati i seguenti errori:\n";
		strMsg += strErr;
		alert(strMsg);
		return false;
	}
	else
		return true;
}

function chkIfString(inVal, inTitle)
{
	if(inVal.Trim() == "")
		return "  - Il campo [" + inTitle + "] e' obbligatorio\n";
	else if(typeof inVal != "string")
		return "  - Il campo [" + inTitle + "] non e' una stringa corretta\n";
	else
		return "";
}

function chkIfNumber(inVal, inTitle)
{
	if(inVal.Trim() == "")
		return "  - Il campo [" + inTitle + "] e' obbligatorio\n";
	else if(!isNumeric(inVal))
		return "  - Il campo [" + inTitle + "] non e' un numero corretto\n";
	else
		return "";
}

function chkIfDate(inVal, inTitle)
{
	if(inVal.Trim() == "")
		return "  - Il campo [" + inTitle + "] e' obbligatorio\n";
	else
		return "";
}

function chkIfEmpty(inVal, inTitle)
{
	if(inVal.Trim() == "")
		return "  - Il campo [" + inTitle + "] e' obbligatorio\n";
	else
		return "";
}

function chkIfEMail(inVal, inTitle)
{
	/* 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. */
	
	/* Begin with the coarse pattern to simply break up user@domain into
	   different pieces that are easy to analyze. */
	var matchArray=inVal.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. */
		return "  - Il campo [" + inTitle + "] non e' corretto (controlla @ e .)\n";
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	
	// See if "user" is valid 
	if (user.match(userPat)==null) {
		// user is not valid
		return "  - Il campo [" + inTitle + "] non sembra essere valido\n";
	}
	
	/* 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) {
				return "  - Il campo [" + inTitle + "] non sembra avere un IP valido\n";
			}
		}
		return ""
	}
	
	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		return "  - Il campo [" + inTitle + "] non sembra avere un nome di dominio valido\n";
	}
	
	/* 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>4) {
	   // the address must end in a two letter or three letter word.
		return "  - Il campo [" + inTitle + "] non sembra avere una estensione di 2, 3, o 4 lettere\n";
	}
	
	// Make sure there's a host name preceding the domain.
	if (len<2) {
		return "  - Il campo [" + inTitle + "] non sembra avere un hostname\n";
	}
	
	// If we've gotten this far, everything's valid!
	return "";
}


/**
 *
 * @access public
 * @return void
 **/
function isNumber(sText)
{
	if(sText.Trim() == "")
		return false;
	else
		return isNumeric(sText);
}

function isNumeric(sText)
{
	var ValidChars = "0123456789.";
	var IsNumber=true;
	var Char;

	for (var i = 0; i < sText.length && IsNumber == true; i++)
	{
		Char = sText.charAt(i);
		if (ValidChars.indexOf(Char) == -1)
		{
			IsNumber = false;
		}
	}
	return IsNumber;
}


function Trim() {
	return this.replace(/\s+$|^\s+/g,"");
}

function LTrim() {
	return this.replace(/^\s+/,"");
}

function RTrim() {
	return this.replace(/\s+$/,"");
}
String.prototype.Trim=Trim;
String.prototype.RTrim=RTrim;
String.prototype.LTrim=LTrim;