// JScript file contains some commonly used functions
//****************************************************

// Regular expression for valid email id
var ValidEmail = /^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*(\.[a-zA-Z][a-zA-Z]+)$/;

// Valid Phone number.
var ValidPhoneCharacter = /^[+0-9-\(\)]+$/;
  
// Regular expression for emptyString
var EmptyString = /^\s*$/;

// Regular expression for Not a number;
var IsNaN = /\D/;

// Trim based on Regular Expression
function Trim(str)
{
  return str.replace(/^\s+|\s+$/g, '');
}

// Method to change display property of an object to block
function DisplayBlock(blk)
{
    $(blk).style.display = "block";
}

// Method to change display property of an object to none
function DisplayNone(blk)
{
    $(blk).style.display = "none";
}

// Method to check if a given date is valid or not
// da -> Day number as string
// mo -> Month number as string
// yr -> Year as string
// Returns true if date is valid
function IsValidDate(da, mo, yr)
{
    if(yr.length != 4 || da.length > 2 || mo.length > 2 || yr.length == 0 || da.length == 0 || mo.length == 0)
    {
        return false;
    }
    if(IsNaN.test(da) || IsNaN.test(mo) || IsNaN.test(yr))
    {
        return false;
    }
    var year = eval(yr);
    var month = eval(mo);
    var day = eval(da);
    if(day == 0 || month == 0 || year == 0)
    {
        return false;
    }
    var daysInMonth = 31;
    if (month == 4 || month == 6 || month == 9 || month == 11)
    {
        daysInMonth = 30;
    }
    if (month == 2)
    {
        daysInMonth = (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 )
    }
    if(month > 12 || day > daysInMonth) 
    {
        return false;
    }
    return true;
}

// Method to check if a given date is valid or not.
// ddsmmm -> Date as string in format "dd mmm".
// Returns true if date is valid.
function IsValidDateDDSMMM(ddsmmm)
{
    if(ddsmmm.length == 0)
    {
        return false;
    }
    var month = new Array("JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC");
    var dt = ddsmmm.split(" ");
    if(!dt[1])
    {
        return false;
    }
    var mm = month.indexOf(dt[1].toUpperCase());
    var dd = eval(dt[0]);
    if (mm < 0) 
    {
        return false;
    }
    var cDate = new Date();
    var yy = cDate.getFullYear();
    if(mm < cDate.getMonth() || (mm == cDate.getMonth() && dd<cDate.getDate()))
    {
        yy++;
    }
    var tDate = new Date(yy, mm, dd);
    
    if(tDate.getFullYear() != yy || tDate.getMonth() != mm || tDate.getDate() != dd)
    {
        return false;
    }
    return true;
}

// Method to pop a div so that it can cover select boxes
// Method uses Iframe shim technique to hide select boxes.
// divId -> Id of the div to be poped out.
// iframeId -> Id of the shim Iframe.
function IShimPop(divId, iframeId)
{
    var DivRef = document.getElementById(divId);
    var IfrRef = document.getElementById(iframeId);
        
//    if(DivRef.style.display == "none")
//    {
        DivRef.style.display = "block";
        IfrRef.style.width = DivRef.offsetWidth + "px";
        IfrRef.style.height = DivRef.offsetHeight + "px";
        IfrRef.style.top = DivRef.style.top;
        IfrRef.style.left = DivRef.style.left;
        IfrRef.style.zIndex = DivRef.style.zIndex - 1;
        IfrRef.style.display = "block";
//    }
//    else
//    {
//        DivRef.style.display = "none";
//        IfrRef.style.display = "none";
//    }
}

// method to ger a browser object aware of browser in use
// this.isIE is true when the browser is Internet Explorer
// this.isNS is true if the browser is Netscape or mozilla or other Gecko browser
// var browser = new Browser(); // syntax to use.
function Browser()
{
    var userAgent, browserKey, i;

    this.isIE    = false;
    this.isNS    = false;
    this.version = null;

    userAgent = navigator.userAgent;

    browserKey = "MSIE";
    if ((i = userAgent.indexOf(browserKey)) >= 0)
    {
        this.isIE = true;
        this.version = parseFloat(userAgent.substr(i + browserKey.length));
        return;
    }

    browserKey = "Netscape6/";
    if ((i = userAgent.indexOf(browserKey)) >= 0)
    {
        this.isNS = true;
        this.version = parseFloat(userAgent.substr(i + browserKey.length));
        return;
    }

    // Treat any other "Gecko" browser as NS 6.1.
    browserKey = "Gecko";
    if ((i = userAgent.indexOf(browserKey)) >= 0)
    {
        this.isNS = true;
        this.version = 6.1;
        return;
    }
}

Array.prototype.indexOf = function(key)
{
    var result = -1;
    for(var i = 0; i < this.length; i++)
    {
        if(this[i] == key)
        {
            result = i;
            break;
        }
    }
    return result;
}
function dateDiffAlert(FirstDate, SecondDate)
{	   
    var difference = (SecondDate.getTime() - FirstDate.getTime());  
                         			     
    if (difference < 0)
    {
        return false;
    }
    return true;
}

function GetWindowSize()
{
    var width =
        document.documentElement && document.documentElement.clientWidth ||
        document.body && document.body.clientWidth ||
        document.body && document.body.parentNode && document.body.parentNode.clientWidth ||
        0;
		
    var height =
        document.documentElement && document.documentElement.clientHeight ||
        document.body && document.body.clientHeight ||
        document.body && document.body.parentNode && document.body.parentNode.clientHeight ||
        0;
  		
    return {x: width, y: height};
}

function CheckValidDate(Day,Mn,Yr)
{
    var DateVal = Mn + "/" + Day + "/" + Yr;
    var dt = new Date(DateVal);

    if(dt.getDate()!=Day)
    {
        //alert('Invalid Date');
        return false;
    }
    else if(dt.getMonth()!=Mn-1)
    {
    //this is for the purpose JavaScript starts the month from 0
        //alert('Invalid Date');
        return false;
    }
    else if(dt.getFullYear()!=Yr)
    {
        //alert('Invalid Date');
        return false;
    }  
    return(true);
 }
 
 // Check if date is not less than current date
 
function CheckDateDiff(Day, Mn, Yr)
{
    var DateVal = Mn + "/" + Day + "/" + Yr;
    var dt = new Date(DateVal);

    // todays date
    var today = new Date();
    var difference = (dt.getTime() - today.getTime());      

    if (difference < 0)
    {	 
        if ((today.getDate() == dt.getDate()) && (today.getMonth() == dt.getMonth()) && (today.getFullYear() == dt.getFullYear())) 
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    return true;
}
//for pax detail page
function IsEmptyDate(day, month, year)
{
    if ((day == "DD" || day.length == 0) && month == "" && (year == "Year" || year.length == 0))
    {
        return true;
    }
    else
    {
        return false;
    }
}