JS Calendar Control __js

//  ********************
Begin Popup Calendar
//  ********************
var popcaldstfld;
var temp;
var Popcalwin;
var divcal;
var iframetemp;
var currentdate;
var imgpath = "";

var divcalheight = 180;
var divcalwidth = 255;

//  ******************************
Expected params:
[0] Window Name
[1] Destination Field
[2] Short Date Format
[3] Month Names
[4] Day Names
[5] Localized today string
[6] Localized close string
[7] Window Title
[8] The Week
//  ******************************
function popupcal ()
{
Debugger Remove slashes to activate debugging in Visual Studio
var tmpdate = new Date ();
var tmpstring = "";
var tmpnum = 0;
var popcaldateval;
var dstwindowname = "";

Initialize the window to a empty object.
Popcalwin = new Object ();

Check for the right number of arguments
if (Arguments.length < 2)
{
Alert ("Popupcal (): Wrong number of arguments.");
return void (0);
}
Get the command line arguments-Localization is optional
Imgpath = popupcal.arguments[0];
Dstwindowname = Popupcal.arguments[0];
POPCALDSTFLD = popupcal.arguments[1];
temp = popupcal.arguments[1];
POPCALDSTFMT = popupcal.arguments[2]; Localized short Date Format String
Popcalmonths = popupcal.arguments[3]; Localized Month Names String
Popcaldays = popupcal.arguments[4]; Localized Day Names String
Popcaltoday = popupcal.arguments[5]; Localized Today string
Popcalclose = popupcal.arguments[6]; Localized close string
Popcaltitle = popupcal.arguments[7]; Window Title
Popcalfirstdayweek = popupcal.arguments[8]; A Week
Popcalfirstdayweek = 0;
Check destination field name
if (popcaldstfld!= "")
POPCALDSTFLD = document.getElementById (POPCALDSTFLD);

Default localized Short date format if not provided
if (popcaldstfmt = "")
POPCALDSTFMT = "YYYY-MM-DD";

Default localized months string if not provided
if (popcalmonths = "")
popcalmonths = "January,february,march,april,may,june,july,august,september,october,november,december";

Default localized months string if not provided
if (popcaldays = "")
{
Popcaldays = "Sun,mon,tue,wed,thu,fri,sat";
}
Else
{
Popcaldays = "Day, one, two, three, four, five, six";

}

Default localized today string if not provided
if (Popcaltoday = = "" | | typeof Popcaltoday = = "undefined")
Popcaltoday = "Today";

Default localized close string if not provided
if (Popcalclose = = "" | | typeof popcalclose = = "undefined")
Popcalclose = "Close";

Default window title if not provided
if (Popcaltitle = = "" | | typeof Popcaltitle = = "undefined")
Popcaltitle = "Calendar";

tmpstring = new String (popcaldstfld.value);
If tmpstring is empty (meaning, the field is empty)
Use todays date as the starting point
if (tmpstring = "")
Popcaldateval = new Date ()
Else
{
Make sure the century are included, if it isn ' t, add this
Century to the value of that is in the field
Tmpnum = Tmpstring.lastindexof ("/");
if ((tmpstring.length-tmpnum) = = 3)
{
tmpstring = tmpstring.substring (0, Tmpnum + 1) + "+" + tmpstring.substr (Tmpnum + 1);
Popcaldateval = new Date (tmpstring);
}
Else
{
Localized Date support:
If we got to this point, it means the field is passed
In has no slashes in it. Use a extra function to build the date
According to supplied date formatstring.
Popcaldateval = Getdatefromformat (TMPSTRING,POPCALDSTFMT);
}
}

Make sure the "date is" a valid date. Set it to this if it is invalid
' NaN ' is the ' return value ' of ' invalid date
if (popcaldateval.tostring () = = "NaN" | | popcaldateval.tostring () = = "0")
{
Popcaldateval = new Date ();
Popcaldstfld.value = "";
}

currentdate = Popcaldateval;

Set the base date to midnight of the the specified month,
This makes things easier?
var datestring = string (Popcaldateval.getmonth () + 1) + "/" + string (popcaldateval.getdate ()) + "/" + S Tring (Popcaldateval.getfullyear ());

Call the routine to draw the initial calendar
Reloadcalpopup (datestring);

return void (0);
}

function Closecalpopup ()
{
Can ' t tell the child windows to close itself, the parent window has to
Tell it to close.
Popcalwin.close ();
DivCal.style.display = "None";
IframeTemp.style.display = "None";
return void (0);
}

function Reloadcalpopup ()//[0]datestring, [1]dstwindowname
{
var tmpdate = n