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) {
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)

	var strYear=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strDay=dtStr.substring(pos2+1)
	var ErrMsg='';
	var Rtn=false;

//	var strYear	 = 	yy;
//	var strMonth =	mm;
//	var strDay	 =	dd;

	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 : yyyy-mm-dd")
		ErrMsg="The date format should be : yyyy-mm-dd";
		Rtn=true;
	}
	else if (strMonth.length<1 || month<1 || month>12) {
		//alert("Please enter a valid month")
		ErrMsg="Please enter a valid month";
		Rtn=true;
	}
	else if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day")
		ErrMsg="Please enter a valid day";
		Rtn=true;
	}
	else if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		ErrMsg="Please enter a valid 4 digit year between "+minYear+" and "+maxYear;
		Rtn=true;
	}
	else if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false) {
		//alert("Please enter a valid date")
		ErrMsg="Please enter a valid date";
		Rtn=true;
	}
	
	if(Rtn==true){
	return ErrMsg;
	}
	else
	{
	return 'Success';
	}
}

function removeAllSpaces(str)
{
   str = removeLeadingSpaces(str); //Remove Leading Spaces
   str = removeTrailingSpaces(str); //Remove Trailing Spaces
   return str;
}

function removeLeadingSpaces(str)
{
   var whitespace = new String(" \t\n\r");
   var s = new String(str);

   if (whitespace.indexOf(s.charAt(0)) != -1)
    {
      var j=0, i = s.length;
      while (j < i && whitespace.indexOf(s.charAt(j)) != -1)  j++;
      s = s.substring(j, i);
    }
   return s;
}

function removeTrailingSpaces(str)
{
   var whitespace = new String(" \t\n\r");
   var s = new String(str);

   if (whitespace.indexOf(s.charAt(s.length-1)) != -1)
   {
      var i = s.length - 1;       // Get length of string
      while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1) i--;

      // Get the substring from the front of the string to
      // where the last non-whitespace character is...
      s = s.substring(0, i+1);
   }

   return s;
}

function echeck(str) {
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if(str.indexOf(at)==-1){
		return false;
	}
	if(str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		return false;
	}
	if(str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false;
	}
	if(str.indexOf(at,(lat+1))!=-1){
		return false;
	}
	if(str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	}
	if(str.indexOf(dot,(lat+2))==-1){
		return false;
	}
	if(str.indexOf(" ")!=-1){
		return false;
	}
	return true;
}