function trim(s)
{
	var l=0; var r=s.length -1;
	while(l < s.length && s[l] == ' ')
	{	l++; }
	while(r > l && s[r] == ' ')
	{	r-=1;	}
	return s.substring(l, r+1);
}

function trim_new(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}
 
function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
 
function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function echeck(str) {

	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(str.match(emailExp)){
		return true;
	}else{
		return false;
	}
}
function CompareDates(fromDate,toDate)
{
   var dt1   = parseInt(fromDate.substring(8,10),10);
   var mon1  = parseInt(fromDate.substring(5,7),10);
   var yr1   = parseInt(fromDate.substring(0,4),10);
   var dt2   = parseInt(toDate.substring(8,10),10);
   var mon2  = parseInt(toDate.substring(5,7),10);
   var yr2   = parseInt(toDate.substring(0,4),10);
   var date1 = new Date(yr1, mon1, dt1);
   var date2 = new Date(yr2, mon2, dt2);

   if(date2 < date1)
   {
      return false;
   }
   else
   {
      return true;
   }
}
function Redirect(path)
{
	window.location = path;
}
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
}
var minYear = 1900;
var maxYear=2100;
function isDate(dtStr,first,second,third,dtCh){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	
	if(first == 'm'){
		var strMonth=dtStr.substring(0,pos1)
	}else if(first == 'd'){
		var strDay=dtStr.substring(0,pos1)
	}else{
		var strYear=dtStr.substring(0,pos1)
	}
	
	if(second == 'm'){
		var strMonth=dtStr.substring(pos1+1,pos2)
	}else if(second == 'd'){
		var strDay=dtStr.substring(pos1+1,pos2)
	}else{
		var strYear=dtStr.substring(pos1+1,pos2)
	}
	
	if(third == 'm'){
		var strMonth=dtStr.substring(pos2+1)
	}else if(third == 'd'){
		var strDay=dtStr.substring(pos2+1)
	}else{
		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("The date format should be :yyyy-mm-dd")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
	return true;
}
function CheckURL(value) {
	var urlregex = new RegExp("^(http:\/\/www.|https:\/\/www.|ftp:\/\/www.|www.){1}([0-9A-Za-z]+\.)");
	if(urlregex.test(value))
	{
		return true;
	}
	return false;
}