// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;


function isEmail(elm) {
        if (elm.value.indexOf(" ") + "" == "-1"
        && elm.value.indexOf("@") + "" != "-1"
        && (elm.value.lastIndexOf(".") > elm.value.indexOf("@"))
        && elm.value != "") return true;
        else return false;
}

function isEmpty(elm) {
        var elmstr = elm.value + "";
        if (elmstr.length == 0) return true;
        return false;
}

function isNlength(elm,N) {
        var elmstr = elm.value + "";
        if (elmstr.length != N) return false;
        for (var i = 0; i < elmstr.length; i++) {
                if (elmstr.charAt(i) < "0" || elmstr.charAt(i) > "9") return false;
        }
        return true;
}

function isInteger(sText){	
   var ValidChars = "0123456789";
   var result=true;
   var Char;

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

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,a,m,j,msg,msg2){
	if (dtStr=="") return "";
	var daterrMsg=""
	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)
		daterrMsg = " - un format de date "+msg2+" valide (jj/mm/aaaa)"
	else if (strMonth.length<1 || month<1 || month>12)
		daterrMsg =" - un mois de date "+msg2+" valide"
	else if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month])
		daterrMsg =" - un jour de date "+msg2+" valide"
	else if (strYear.length != 4 || year==0 || year<minYear || year>maxYear)
		daterrMsg =" - une annee de date "+msg2+" valide"
	else if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false)
		daterrMsg =" - une date "+msg2+" valide"
	else {
		today = new Date(a,m-1,j);
		zedate = new Date(year,month-1,day);
		if (zedate < today) daterrMsg =" - une date "+msg
	}
	
return daterrMsg;
}

function isValidDate(dtStr){
	if (dtStr=="") return "";
	var daterrMsg=""
	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)
		daterrMsg = " - un format de date valide (jj/mm/aaaa)"
	else if (strMonth.length<1 || month<1 || month>12)
		daterrMsg =" - un mois de date  valide"
	else if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month])
		daterrMsg =" - un jour de date valide"
	else if (strYear.length != 4 || year==0 || year<minYear || year>maxYear)
		daterrMsg =" - une annee de date valide sur 4 chiffres"
	else if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false)
		daterrMsg =" - une date valide"
	
return daterrMsg;
}


function  replacenocase(string, substring1, substring2 , scope )
{
if(!scope){scope='1'}
if(scope!='ALL'){scope='1'}
re = '/'+substring1
if(scope=='1'){re += '/i'}
else{re +='/gi'}
new_string = string.replace(eval(re),substring2)
return new_string
}