<!--


//Esconde/Mostra um painel p
function ShowPainel(p){
	e = p.style.display;
	if (e == 'none'){p.style.display = 'inline';}
	else{p.style.display = 'none';}}

function gotoBookmark(id){
	var bm = document.getElementById(id);
	if (bm == undefined) return;
	window.scrollTo(bm.screenX, bm.screenY);}

//Validação das Datas
var dtCh= "-";
var minYear=1800;
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(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("O formato de data invalido (dd-mm-yyyy)")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Mes Invalido")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Dia Invalido")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Ano Invalido (4 digitos)"+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Data Invalida")
		return false
	}
return true
}

/*----------------------------------
Quando os campos datas são alterados,
vamos validar o formato.
OnChange só é despoletado pelo Tab
-------------------------------------*/
function ValidateDate(id){
	var dt=document.getElementById(id)
	if (isDate(dt.value)==false){
		dt.value = ""
		dt.focus()
		return false
	}
    return true
 }
 /*--------------------------------------
	Quando se pressiona Enter faz-se o Submit da página, 
	logo temos de validar as datas
	
	Páginas que usam o estilo RData:
 	SineClass_vers
	SineEntid_class
	SineEntid_vers
	SineGrp
	sineGrp_vers
	SineTCorr
	SineTInd
	SineVers_corr
	
	Não esquecer acrescentar no Html:
	<form ... onSubmit="return CheckForm()">
*----------------------------------------*/

 //Verifica se as datas do form estão no formato correcto
 function CheckForm(){
	var dt1=document.getElementById("txtData1")
	var dt2=document.getElementById("txtData2")
	var x1 = true
	var x2 = true
	
	if (dt1.value!= "")
	{
		if (isDate(dt1.value)==false){
			dt1.value = ""
			dt1.focus()
		x1 = false
		}
	}
	
	if (dt2 != null)
	{
		if (dt2.value!= "")
		{
			if (isDate(dt2.value)==false){
				dt2.value = ""
				dt2.focus()
				x2 = false
			}
		}
	}
	
	if (x1 == true && x2 == true)
		return true
	else
		return false
		
	return true
 }

-->

