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Popup Calendar Date Selection
R5 - Web Applications
Popup Calendar Date Selection
by
NiteLink
Posted
(Edited
)
var weekendColor = "#e0e0e0";
var fontface = "Verdana";
var fontsize = 2;
var gNow = new Date();
var ggWinCal;
isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;
Calendar.Months = ["January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"];
// Non-Leap year Month days..
Calendar.DOMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
// Leap year Month days..
Calendar.lDOMonth = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
function Calendar(p_item, p_WinCal, p_month, p_year, p_format) {
if ((p_month == null) && (p_year == null)) return;
if (p_WinCal == null)
this.gWinCal = ggWinCal;
else
this.gWinCal = p_WinCal;
if (p_month == null) {
this.gMonthName = null;
this.gMonth = null;
this.gYearly = true;
} else {
this.gMonthName = Calendar.get_month(p_month);
this.gMonth = new Number(p_month);
this.gYearly = false;
}
this.gYear = p_year;
this.gFormat = p_format;
this.gBGColor = "white";
this.gFGColor = "black";
this.gTextColor = "black";
this.gHeaderColor = "black";
this.gReturnItem = p_item;
}
Calendar.get_month = Calendar_get_month;
Calendar.get_daysofmonth = Calendar_get_daysofmonth;
Calendar.calc_month_year = Calendar_calc_month_year;
Calendar.print = Calendar_print;
function Calendar_get_month(monthNo) {
return Calendar.Months[monthNo];
}
function Calendar_get_daysofmonth(monthNo, p_year) {
/*
Check for leap year ..
1.Years evenly divisible by four are normally leap years, except for...
2.Years also evenly divisible by 100 are not leap years, except for...
3.Years also evenly divisible by 400 are leap years.
*/
if ((p_year % 4) == 0) {
if ((p_year % 100) == 0 && (p_year % 400) != 0)
return Calendar.DOMonth[monthNo];
return Calendar.lDOMonth[monthNo];
} else
return Calendar.DOMonth[monthNo];
}
function Calendar_calc_month_year(p_Month, p_Year, incr) {
/*
Will return an 1-D array with 1st element being the calculated month
and second being the calculated year
after applying the month increment/decrement as specified by 'incr'
parameter.
'incr' will normally have 1/-1 to navigate thru the months.
*/
var ret_arr = new Array();
if (incr == -1) {
// B A C K W A R D
if (p_Month == 0) {
ret_arr[0] = 11;
ret_arr[1] = parseInt(p_Year) - 1;
}
else {
ret_arr[0] = parseInt(p_Month) - 1;
ret_arr[1] = parseInt(p_Year);
}
} else if (incr == 1) {
// F O R W A R D
if (p_Month == 11) {
ret_arr[0] = 0;
ret_arr[1] = parseInt(p_Year) + 1;
}
else {
ret_arr[0] = parseInt(p_Month) + 1;
ret_arr[1] = parseInt(p_Year);
}
}
return ret_arr;
}
function Calendar_print() {
ggWinCal.print();
}
function Calendar_calc_month_year(p_Month, p_Year, incr) {
/*
Will return an 1-D array with 1st element being the calculated month
and second being the calculated year
after applying the month increment/decrement as specified by 'incr'
parameter.
'incr' will normally have 1/-1 to navigate thru the months.
*/
var ret_arr = new Array();
if (incr == -1) {
// B A C K W A R D
if (p_Month == 0) {
ret_arr[0] = 11;
ret_arr[1] = parseInt(p_Year) - 1;
}
else {
ret_arr[0] = parseInt(p_Month) - 1;
ret_arr[1] = parseInt(p_Year);
}
} else if (incr == 1) {
// F O R W A R D
if (p_Month == 11) {
ret_arr[0] = 0;
ret_arr[1] = parseInt(p_Year) + 1;
}
else {
ret_arr[0] = parseInt(p_Month) + 1;
ret_arr[1] = parseInt(p_Year);
}
}
return ret_arr;
}
// This is for compatibility with Navigator 3, we have to create and discard
one object before the prototype object exists.
new Calendar();
Calendar.prototype.getMonthlyCalendarCode = function() {
var vCode = "";
var vHeader_Code = "";
var vData_Code = "";
// Begin Table Drawing code here..
vCode = vCode + "<TABLE BORDER=1 BGCOLOR=\"" + this.gBGColor + "\">";
vHeader_Code = this.cal_header();
vData_Code = this.cal_data();
vCode = vCode + vHeader_Code + vData_Code;
vCode = vCode + "</TABLE>";
return vCode;
}
Calendar.prototype.show = function() {
var vCode = "";
this.gWinCal.document.open();
// Setup the page...
this.wwrite("<html>");
this.wwrite("<head><title>Calendar</title>");
this.wwrite("</head>");
this.wwrite("<body " +
"link=\"" + this.gLinkColor + "\" " +
"vlink=\"" + this.gLinkColor + "\" " +
"alink=\"" + this.gLinkColor + "\" " +
"text=\"" + this.gTextColor + "\">");
this.wwriteA("<FONT FACE='" + fontface + "' SIZE=2><B>");
this.wwriteA(this.gMonthName + " " + this.gYear);
this.wwriteA("</B><BR>");
// Show navigation buttons
var prevMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, -1);
var prevMM = prevMMYYYY[0];
var prevYYYY = prevMMYYYY[1];
var nextMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, 1);
var nextMM = nextMMYYYY[0];
var nextYYYY = nextMMYYYY[1];
this.wwrite("<TABLE WIDTH='100%' BORDER=1 CELLSPACING=0 CELLPADDING=0
BGCOLOR='#e0e0e0'><TR><TD ALIGN=center>");
this.wwrite("A HREF=\"" +
"javascript:window.opener.Build(" +
"'" + this.gReturnItem + "', '" + this.gMonth + "', '" +
(parseInt(this.gYear)-1) + "', '" + this.gFormat + "'" +
");" +
"\"><<<\/A>]</TD><TD ALIGN=center>");
this.wwrite("A HREF=\"" +
"javascript:window.opener.Build(" +
"'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY +
"', '" + this.gFormat + "'" +
");" +
"\"><<\/A>]</TD><TD ALIGN=center>");
this.wwrite("A HREF=\"javascript:window.print();\">Print</A>]</TD><TD
ALIGN=center>");
this.wwrite("A HREF=\"" +
"javascript:window.opener.Build(" +
"'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY +
"', '" + this.gFormat + "'" +
");" +
"\">><\/A>]</TD><TD ALIGN=center>");
this.wwrite("A HREF=\"" +
"javascript:window.opener.Build(" +
"'" + this.gReturnItem + "', '" + this.gMonth + "', '" +
(parseInt(this.gYear)+1) + "', '" + this.gFormat + "'" +
");" +
"\">>><\/A>]</TD></TR></TABLE><BR>");
// Get the complete calendar code for the month..
vCode = this.getMonthlyCalendarCode();
this.wwrite(vCode);
this.wwrite("</font></body></html>");
this.gWinCal.document.close();
}
Calendar.prototype.showY = function() {
var vCode = "";
var i;
var vr, vc, vx, vy; // Row, Column, X-coord, Y-coord
var vxf = 285; // X-Factor
var vyf = 200; // Y-Factor
var vxm = 10; // X-margin
var vym; // Y-margin
if (isIE) vym = 75;
else if (isNav) vym = 25;
this.gWinCal.document.open();
this.wwrite("<html>");
this.wwrite("<head><title>Calendar</title>");
this.wwrite("<style type='text/css'>\n<!--");
for (i=0; i<12; i++) {
vc = i % 3;
if (i>=0 && i<= 2) vr = 0;
if (i>=3 && i<= 5) vr = 1;
if (i>=6 && i<= 8) vr = 2;
if (i>=9 && i<= 11) vr = 3;
vx = parseInt(vxf * vc) + vxm;
vy = parseInt(vyf * vr) + vym;
this.wwrite(".lclass" + i + " {position:absolute;top:" + vy +
";left:" + vx + ";}");
}
this.wwrite("-->\n</style>");
this.wwrite("</head>");
this.wwrite("<body " +
"link=\"" + this.gLinkColor + "\" " +
"vlink=\"" + this.gLinkColor + "\" " +
"alink=\"" + this.gLinkColor + "\" " +
"text=\"" + this.gTextColor + "\">");
this.wwrite("<FONT FACE='" + fontface + "' SIZE=2><B>");
this.wwrite("Year : " + this.gYear);
this.wwrite("</B><BR>");
// Show navigation buttons
var prevYYYY = parseInt(this.gYear) - 1;
var nextYYYY = parseInt(this.gYear) + 1;
this.wwrite("<TABLE WIDTH='100%' BORDER=1 CELLSPACING=0 CELLPADDING=0
BGCOLOR='#e0e0e0'><TR><TD ALIGN=center>");
this.wwrite("A HREF=\"" +
"javascript:window.opener.Build(" +
"'" + this.gReturnItem + "', null, '" + prevYYYY + "', '" +
this.gFormat + "'" +
");" +
"\" alt='Prev Year'><<<\/A>]</TD><TD ALIGN=center>");
this.wwrite("A HREF=\"javascript:window.print();\">Print</A>]</TD><TD
ALIGN=center>");
this.wwrite("A HREF=\"" +
"javascript:window.opener.Build(" +
"'" + this.gReturnItem + "', null, '" + nextYYYY + "', '" +
this.gFormat + "'" +
");" +
"\">>><\/A>]</TD></TR></TABLE><BR>");
// Get the complete calendar code for each month..
var j;
for (i=11; i>=0; i--) {
if (isIE)
this.wwrite("<DIV ID=\"layer" + i + "\" CLASS=\"lclass"
+ i + "\">");
else if (isNav)
this.wwrite("<LAYER ID=\"layer" + i + "\"
CLASS=\"lclass" + i + "\">");
this.gMonth = i;
this.gMonthName = Calendar.get_month(this.gMonth);
vCode = this.getMonthlyCalendarCode();
this.wwrite(this.gMonthName + "/" + this.gYear + "<BR>");
this.wwrite(vCode);
if (isIE)
this.wwrite("</DIV>");
else if (isNav)
this.wwrite("</LAYER>");
}
this.wwrite("</font><BR></body></html>");
this.gWinCal.document.close();
}
Calendar.prototype.wwrite = function(wtext) {
this.gWinCal.document.writeln(wtext);
}
Calendar.prototype.wwriteA = function(wtext) {
this.gWinCal.document.write(wtext);
}
Calendar.prototype.cal_header = function() {
var vCode = "";
vCode = vCode + "<TR>";
vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Sun</B></FONT></TD>";
vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Mon</B></FONT></TD>";
vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Tue</B></FONT></TD>";
vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Wed</B></FONT></TD>";
vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Thu</B></FONT></TD>";
vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Fri</B></FONT></TD>";
vCode = vCode + "<TD WIDTH='16%'><FONT SIZE='2' FACE='" + fontface + "'
COLOR='" + this.gHeaderColor + "'><B>Sat</B></FONT></TD>";
vCode = vCode + "</TR>";
return vCode;
}
Calendar.prototype.cal_data = function() {
var vDate = new Date();
vDate.setDate(1);
vDate.setMonth(this.gMonth);
vDate.setFullYear(this.gYear);
var vFirstDay=vDate.getDay();
var vDay=1;
var vLastDay=Calendar.get_daysofmonth(this.gMonth, this.gYear);
var vOnLastDay=0;
var vCode = "";
/*
Get day for the 1st of the requested month/year..
Place as many blank cells before the 1st day of the month as necessary.
*/
vCode = vCode + "<TR>";
for (i=0; i<vFirstDay; i++) {
vCode = vCode + "<TD WIDTH='14%'" +
this.write_weekend_string(i) + "><FONT SIZE='2' FACE='" + fontface + "'>
</FONT></TD>";
}
// Write rest of the 1st week
for (j=vFirstDay; j<7; j++) {
vCode = vCode + "<TD WIDTH='14%'" +
this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" +
"<A HREF='#' " +
"onClick=\"self.opener." + this.gReturnItem +
"='" + this.format_data(vDay) +
"';window.close();\">" +
this.format_day(vDay) +
"</A>" +
"</FONT></TD>";
vDay=vDay + 1;
}
vCode = vCode + "</TR>";
// Write the rest of the weeks
for (k=2; k<7; k++) {
vCode = vCode + "<TR>";
for (j=0; j<7; j++) {
vCode = vCode + "<TD WIDTH='14%'" +
this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" +
"<A HREF='#' " +
"onClick=\"self.opener." +
this.gReturnItem + "='" + this.format_data(vDay) +
"';window.close();\">" +
this.format_day(vDay) +
"</A>" +
"</FONT></TD>";
vDay=vDay + 1;
if (vDay > vLastDay) {
vOnLastDay = 1;
break;
}
}
if (j == 6)
vCode = vCode + "</TR>";
if (vOnLastDay == 1)
break;
}
// Fill up the rest of last week with proper blanks, so that we get
proper square blocks
for (m=1; m<(7-j); m++) {
if (this.gYearly)
vCode = vCode + "<TD WIDTH='14%'" +
this.write_weekend_string(j+m) +
"><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'>
</FONT></TD>";
else
vCode = vCode + "<TD WIDTH='14%'" +
this.write_weekend_string(j+m) +
"><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'>"
+ m + "</FONT></TD>";
}
return vCode;
}
Calendar.prototype.format_day = function(vday) {
var vNowDay = gNow.getDate();
var vNowMonth = gNow.getMonth();
var vNowYear = gNow.getFullYear();
if (vday == vNowDay && this.gMonth == vNowMonth && this.gYear ==
vNowYear)
return ("<FONT COLOR=\"RED\"><B>" + vday + "</B></FONT>");
else
return (vday);
}
Calendar.prototype.write_weekend_string = function(vday) {
var i;
// Return special formatting for the weekend day.
for (i=0; i<weekend.length; i++) {
if (vday == weekend)
return (" BGCOLOR=\"" + weekendColor + "\"");
}
return "";
}
Calendar.prototype.format_data = function(p_day) {
var vData;
var vMonth =1 + this.gMonth;
vMonth = (vMonth.toString().length < 2) ? "0" + vMonth : vMonth;
var vMon = Calendar.get_month(this.gMonth).substr(0,3).toUpperCase();
var vFMon = Calendar.get_month(this.gMonth).toUpperCase();
var vY4 = new String(this.gYear);
var vY2 = new String(this.gYear.substr(2,2));
var vDD = (p_day.toString().length < 2) ? "0" + p_day : p_day;
var montharray=new
Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")
switch (this.gFormat) {
case "MM\/DD\/YYYY" :
vData = montharray[vMonth - 1] + "\/" + vDD + "\/" +
vY4;
break;
case "MM\/DD\/YY" :
vData = montharray[vMonth - 1] + "\/" + vDD + "\/" +
vY2;
break;
case "MM-DD-YYYY" :
vData = montharray[vMonth - 1] + "-" + vDD + "-" + vY4;
break;
case "MM-DD-YY" :
vData = montharray[vMonth - 1] + "-" + vDD + "-" + vY2;
break;
case "DD\/MON\/YYYY" :
vData = vDD + "\/" + vMon + "\/" + vY4;
break;
case "DD\/MON\/YY" :
vData = vDD + "\/" + vMon + "\/" + vY2;
break;
case "DD-MON-YYYY" :
vData = vDD + "-" + vMon + "-" + vY4;
break;
case "DD-MON-YY" :
vData = vDD + "-" + vMon + "-" + vY2;
break;
case "DD\/MONTH\/YYYY" :
vData = vDD + "\/" + vFMon + "\/" + vY4;
break;
case "DD\/MONTH\/YY" :
vData = vDD + "\/" + vFMon + "\/" + vY2;
break;
case "DD-MONTH-YYYY" :
vData = vDD + "-" + vFMon + "-" + vY4;
break;
case "DD-MONTH-YY" :
vData = vDD + "-" + vFMon + "-" + vY2;
break;
case "DD\/MM\/YYYY" :
vData = vDD + "\/" + montharray[vMonth - 1] + "\/" +
vY4;
break;
case "DD\/MM\/YY" :
vData = vDD + "\/" + montharray[vMonth - 1] + "\/" +
vY2;
break;
case "DD-MM-YYYY" :
vData = vDD + "-" + montharray[vMonth - 1] + "-" + vY4;
break;
case "DD-MM-YY" :
vData = vDD + "-" + montharray[vMonth - 1] + "-" + vY2;
break;
default :
vData = vDD + " " + montharray[vMonth - 1] + " " + vY4;
}
return vData;
}
function Build(p_item, p_month, p_year, p_format) {
var p_WinCal = ggWinCal;
gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format);
// Customize your Calendar here..
gCal.gBGColor="white";
gCal.gLinkColor="black";
gCal.gTextColor="black";
gCal.gHeaderColor="darkgreen";
// Choose appropriate show function
if (gCal.gYearly) gCal.showY();
else gCal.show();
}
function show_calendar() {
/*
p_month : 0-11 for Jan-Dec; 12 for All Months.
p_year : 4-digit year
p_format: Date format (mm/dd/yyyy, dd/mm/yy, ...)
p_item : Return Item.
*/
p_item = arguments[0];
if (arguments[1] == null)
p_month = new String(gNow.getMonth());
else
p_month = arguments[1];
if (arguments[2] == "" || arguments[2] == null)
p_year = new String(gNow.getFullYear().toString());
else
p_year = arguments[2];
if (arguments[3] == null)
p_format = "DD MM YYYY";
else
p_format = arguments[3];
vWinCal = window.open("", "Calendar",
"width=250,height=250,status=no,resizable=no,top=200,left=200");
vWinCal.opener = self;
ggWinCal = vWinCal;
Build(p_item, p_month, p_year, p_format);
}
/*
Yearly Calendar Code Starts here
*/
function show_yearly_calendar(p_item, p_year, p_format) {
// Load the defaults..
if (p_year == null || p_year == "")
p_year = new String(gNow.getFullYear().toString());
if (p_format == null || p_format == "")
p_format = "DD MM YYYY";
var vWinCal = window.open("", "Calendar", "scrollbars=yes");
vWinCal.opener = self;
ggWinCal = vWinCal;
Build(p_item, null, p_year, p_format);
}
Call out the function with the following in the button onClick:
show_calendar('document.forms[0].DateField.value')
Please Note: 1 is Bad, 10 is Good :-)
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