/**
 * Copyright 2004 - 2005 by Brilho Digital, Lda., All Rights Reserved.
 * http://www.brilhodigital.com/
 */

function checkFlash()
{
  useFlash = readCookie('useFlash');
  if (useFlash == null) {
      df = detectPlugin('Shockwave','Flash');
    if (df)
      useFlash = 1;
    else
      useFlash = 0;
    createCookie('useFlash', useFlash, 30);
  }
}

function toggleFlash()
{
  if (useFlash == 0)
    useFlash = 1;
  else
    useFlash = 0;
  createCookie('useFlash', useFlash, 30);
}

function popup(link, w, h)
{
  w = w + 16;
  h = h + 16;
  window.open(link, "", "status=0,toolbar=0,scrollbars=1,directories=0,location=0,resizeable=1,width="+w+",height="+h);
}

/**
 * This script was originally written by Scott Andrew (http://www.scottandrew.com).
 * http://www.quirksmode.org/js/cookies.html
 */
function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

/**
 * This script was originally written by Scott Andrew (http://www.scottandrew.com).
 * http://www.quirksmode.org/js/cookies.html
 */
function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

/**
 * This script was originally written by Scott Andrew (http://www.scottandrew.com).
 * http://www.quirksmode.org/js/cookies.html
 */
function eraseCookie(name)
{
	createCookie(name,"",-1);
}

/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
//var dtCh= "/";
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,strTxt){
	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)
	var strYear=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strDay=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("The date format should be : mm/dd/yyyy")
		alert(strTxt+" deve ter um formato: yyyy-mm-dd")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
//		alert("Please enter a valid month")
		alert("Mês da "+strTxt+" inválido")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
//		alert("Please enter a valid day")
		alert("Dia da "+strTxt+" inválido")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
//		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		alert("Ano da "+strTxt+" inválido")
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
//		alert("Please enter a valid date")
		alert(strTxt+" inválida")
		return false
	}
return true
}

function ValidateForm(){
	var dt=document.frmSample.txtDate
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
 }