Date Picker in new window : Calendar « GUI Components « JavaScript DHTML

Date Picker in new window

<script language="JavaScript">

//Script by Denis Gritcyuk:
// Title: Timestamp picker
// Description: See the demo at url
// URL:
// Version: 1.0
// Date: 12-05-2001 (mm-dd-yyyy)
// Author: Denis Gritcyuk <>; <>
// Notes: Permission given to use this script in any kind of applications if
//    header lines are left unchanged. Feel free to contact the author
//    for feature requests and/or donations

function show_calendar(str_target, str_datetime) {
  var arr_months = ["January", "February", "March", "April", "May", "June",
    "July", "August", "September", "October", "November", "December"];
  var week_days = ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"];
  var n_weekstart = 1; // day week starts from (normally 0 or 1)

  var dt_datetime = (str_datetime == null || str_datetime =="" ?  new Date() : str2dt(str_datetime));
  var dt_prev_month = new Date(dt_datetime);
  var dt_next_month = new Date(dt_datetime);
  var dt_firstday = new Date(dt_datetime);
  var dt_lastday = new Date(dt_next_month);
  // html generation (feel free to tune it for your particular application)
  // print calendar header
  var str_buffer = new String (
    "  <title>Calendar</title>\n"+
    "<body bgcolor=\"White\">\n"+
    "<table class=\"clsOTable\" cellspacing=\"0\" border=\"0\" width=\"100%\">\n"+
    "<tr><td bgcolor=\"#4682B4\">\n"+
    "<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
    "<tr>\n  <td bgcolor=\"#4682B4\"><a href=\"javascript:window.opener.show_calendar('"+
    str_target+"', '"+ dt2dtstr(dt_prev_month)+"';\">"+
    "<img src=\"prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
    " alt=\"previous month\"></a></td>\n"+
    "  <td bgcolor=\"#4682B4\" colspan=\"5\">"+
    "<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"
    +arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</font></td>\n"+
    "  <td bgcolor=\"#4682B4\" align=\"right\"><a href=\"javascript:window.opener.show_calendar('"
    +str_target+"', '"+dt2dtstr(dt_next_month)+"';\">"+
    "<img src=\"next.gif\" width=\"16\" height=\"16\" border=\"0\""+
    " alt=\"next month\"></a></td>\n</tr>\n"

  var dt_current_day = new Date(dt_firstday);
  // print weekdays titles
  str_buffer += "<tr>\n";
  for (var n=0; n<7; n++)
    str_buffer += "  <td bgcolor=\"#87CEFA\">"+
    "<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"+
  // print calendar table
  str_buffer += "</tr>\n";
  while (dt_current_day.getMonth() == dt_datetime.getMonth() ||
    dt_current_day.getMonth() == dt_firstday.getMonth()) {
    // print row heder
    str_buffer += "<tr>\n";
    for (var n_current_wday=0; n_current_wday<7; n_current_wday++) {
        if (dt_current_day.getDate() == dt_datetime.getDate() &&
          dt_current_day.getMonth() == dt_datetime.getMonth())
          // print current date
          str_buffer += "  <td bgcolor=\"#FFB6C1\" align=\"right\">";
        else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
          // weekend days
          str_buffer += "  <td bgcolor=\"#DBEAF5\" align=\"right\">";
          // print working days of current month
          str_buffer += "  <td bgcolor=\"white\" align=\"right\">";

        if (dt_current_day.getMonth() == dt_datetime.getMonth())
          // print days of current month
          str_buffer += "<a href=\"javascript:window.opener."+str_target+
          ".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+
          "<font color=\"black\" face=\"tahoma, verdana\" size=\"2\">";
          // print days of other months
          str_buffer += "<a href=\"javascript:window.opener."+str_target+
          ".value='"+dt2dtstr(dt_current_day)+"'; window.close();\">"+
          "<font color=\"gray\" face=\"tahoma, verdana\" size=\"2\">";
        str_buffer += dt_current_day.getDate()+"</font></a></td>\n";
    // print row footer
    str_buffer += "</tr>\n";
  // print calendar footer
  str_buffer +=
    "<form name=\"cal\">\n<tr><td colspan=\"7\" bgcolor=\"#87CEFA\">"+
    "<font color=\"White\" face=\"tahoma, verdana\" size=\"2\">"+
    "Time: <input type=\"text\" name=\"time\" value=\""+dt2tmstr(dt_datetime)+
    "\" size=\"8\" maxlength=\"8\"></font></td></tr>\n</form>\n" +
    "</table>\n" +
    "</tr>\n</td>\n</table>\n" +
    "</body>\n" +

  var vWinCal ="", "Calendar", 
  vWinCal.opener = self;
  var calc_doc = vWinCal.document;
  calc_doc.write (str_buffer);
// datetime parsing and formatting routimes. modify them if you wish other datetime format
function str2dt (str_datetime) {
  var re_date = /^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/;
  if (!re_date.exec(str_datetime))
    return alert("Invalid Datetime format: "+ str_datetime);
  return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6));
function dt2dtstr (dt_datetime) {
  return (new String (
      dt_datetime.getDate()+"-"+(dt_datetime.getMonth()+1)+"-"+dt_datetime.getFullYear()+" "));
function dt2tmstr (dt_datetime) {
  return (new String (


<form name="tstest">
<input type="Text" name="timestamp" value="">
<a href="javascript:show_calendar('document.tstest.timestamp', document.tstest.timestamp.value);"><img src="cal.gif" width="16" height="16" border="0" alt="Click Here to Pick up the timestamp"></a>


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