/*DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)*/
var dtCh= "/";
var minYear=1893;
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 strMonth=dtStr.substring(0,pos1)
	var strDay=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)
	}
	day=parseInt(strMonth)
	month=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("O formato de Data deve ser : dd/mm/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Por favor entre com um mês válido")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Por favor entre com um dia válido")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Por favor entre com um ano de 4 digitos entre "+minYear+" e "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Por davor entre com uma data válida")
		return false
	}
return true
}
/*DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)*/

//adaptado de http://www.tvzura.com.br/cadastro.jsp
function mascara(field, sMask, evtKeyPress) {
	var i, nCount, sValue, fldLen, mskLen,bolMask, sCod, nTecla;
	if(document.all) { 
		nTecla = evtKeyPress.keyCode; }
	else {
		nTecla = evtKeyPress.which;
	}
	sValue = field.value;
	sValue = sValue.toString().replace(/\-/g, "");
	sValue = sValue.toString().replace(/\./g, "");
	sValue = sValue.toString().replace(/\//g, "");
	sValue = sValue.toString().replace(/\(/g, "");
	sValue = sValue.toString().replace(/\)/g, "");
	sValue = sValue.toString().replace(/\s/g, "");
	sValue = sValue.toString().replace(/\,/g, "");
	fldLen = sValue.length;
	mskLen = sMask.length;
	i = 0;
	nCount = 0;
	sCod = "";
	mskLen = fldLen;
	if (nTecla !=8){
	   while (i <= mskLen) {
		  bolMask = ((sMask.charAt(i) == "-") || (sMask.charAt(i) == ".") || (sMask.charAt(i) == "/") || (sMask.charAt(i) == ","))
		  bolMask = bolMask || ((sMask.charAt(i) == "(") || (sMask.charAt(i) == ")") || (sMask.charAt(i) == " "))
	
		  if (bolMask) {
			 sCod += sMask.charAt(i);
			 mskLen++; 
		  } else {
			 sCod += sValue.charAt(nCount);
		     nCount++;
		  }
	       i++;
	   }	
		
	   field.value = sCod;
	}
	if (nTecla != 8) { 
		if (sMask.charAt(i-1) == "9") { 
			return ((nTecla > 47) && (nTecla < 58)); 
		} 
		else { 
			return true;
		} 
	} else {
		return true;
	}
}

function changeDisplayState (id) {
	e=document.getElementById(id);
	if (e) {
		if (e.style.display == 'none' || e.style.display == "") 
			e.style.display = 'block';
		else 
			e.style.display = 'none';
	}
}