function CallPageMethod(methodName, onSuccess, onFail) {
    var args = '';
    var l = arguments.length;
    if (l > 3) { 
        for (var i = 3; i < l - 1; i += 2) {
            if (args.length != 0) args += ',';
            args += '"' + arguments[i] + '":"' + arguments[i + 1] + '"';
        }
    }
    var loc = window.location.protocol + "//" + window.location.host + "/services/internal/ajaxfunctions.aspx/";
    $.ajax({
        type: "POST",
        cache: false,
        url: loc + methodName,
        data: "{" + args + "}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: onSuccess,
        fail: onFail,
        error: PageMethodFail
    });
}

function PageMethodFail(XMLHttpRequest, textStatus, errorThrown) {
    alert(XMLHttpRequest.responseText);
    alert(errorThrown);
}

function CallPageMethodExt(methodName, onSuccess, onFail) {
    var args = '';
    var l = arguments.length;
    if (l > 3) {
        for (var i = 3; i < l - 1; i += 2) {
            if (args.length != 0) args += ',';
            args += '"' + arguments[i] + '":"' + arguments[i + 1] + '"';
        }
    }
    var loc = window.location.protocol + "//" + window.location.host + "/services/external/ajaxfunctions.aspx/";
    $.ajax({
        type: "POST",
        cache: false,
        url: loc + methodName,
        data: "{" + args + "}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: onSuccess,
        fail: onFail
    });
}

Date.prototype.add = function (sInterval, iNum) {
    var dTemp = this;
    if (!sInterval || iNum == 0) return dTemp;
    switch (sInterval.toLowerCase()) {
        case "ms":
            dTemp.setMilliseconds(dTemp.getMilliseconds() + iNum);
            break;
        case "s":
            dTemp.setSeconds(dTemp.getSeconds() + iNum);
            break;
        case "mi":
            dTemp.setMinutes(dTemp.getMinutes() + iNum);
            break;
        case "h":
            dTemp.setHours(dTemp.getHours() + iNum);
            break;
        case "d":
            dTemp.setDate(dTemp.getDate() + iNum);
            break;
        case "mo":
            dTemp.setMonth(dTemp.getMonth() + iNum);
            break;
        case "y":
            dTemp.setFullYear(dTemp.getFullYear() + iNum);
            break;
    }
    return dTemp;
}

function formatDate(value) {
    //alert(value);
    var data = value.split("/");
    //return value.getMonth() + 1 + "/" + value.getDate() + "/" + value.getYear();
    return data[1] + "/" + data[0] + "/" + data[2];
}
function formatServerDate(value) {
    //alert(value);
    return value.getDate() + "/" + eval(value.getMonth() + 1) + "/" + value.getFullYear();
}

function Redirect(url) {
    window.location = url;
}

function IsNumeric(val) {
    if (isNaN(parseFloat(val))) {
        return false;
    }
    return true
}


/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/datevalidation.asp)
 */
// Declaring valid date character, minimum year and maximum year
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 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){
		alert("The date format should be : dd/mm/yyyy")
		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
}