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119 ghuddy 1 
// Title: Timestamp picker
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// Description: See the demo at url
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// URL: http://us.geocities.com/tspicker/
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// Script featured on: http://javascriptkit.com/script/script2/timestamp.shtml
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// Version: 1.0
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// Date: 06-26-2007 (mm-dd-yyyy)
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// Author: Rupesh Solanki <rsolanki@erggroup.com>; <rupla2000@yahoo.com>
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function show_calendar(str_target, str_datetime) {
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	var arr_months = ["January", "February", "March", "April", "May", "June",
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		"July", "August", "September", "October", "November", "December"];
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	var week_days = ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"];
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	var n_weekstart = 1; // day week starts from (normally 0 or 1)
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	var dt_datetime = (str_datetime == null || str_datetime =="" ?  new Date() : str2dt(str_datetime));
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	var dt_prev_month = new Date(dt_datetime);
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	dt_prev_month.setMonth(dt_datetime.getMonth()-1);
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	var dt_next_month = new Date(dt_datetime);
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	dt_next_month.setMonth(dt_datetime.getMonth()+1);
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	var dt_firstday = new Date(dt_datetime);
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	dt_firstday.setDate(1);
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	dt_firstday.setDate(1-(7+dt_firstday.getDay()-n_weekstart)%7);
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	var dt_lastday = new Date(dt_next_month);
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	dt_lastday.setDate(0);
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	// print calendar header
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	var str_buffer = new String (
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		"<html>\n"+
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		"<head>\n"+
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		"	<title>Calendar</title>\n"+
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		"</head>\n"+
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		"<body bgcolor=\"White\">\n"+
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		"<table class=\"clsOTable\" cellspacing=\"0\" border=\"0\" width=\"100%\">\n"+
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		"<tr><td bgcolor=\"#4682B4\">\n"+
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		"<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
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		"<tr>\n	<td bgcolor=\"#4682B4\"><a href=\"javascript:window.opener.show_calendar('"+
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		str_target+"', '"+ dt2dtstr(dt_prev_month)+"'+document.cal.time.value);\">"+
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		"<img src=\"images/prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
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		" alt=\"previous month\"></a></td>\n"+
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		"	<td bgcolor=\"#4682B4\" colspan=\"5\">"+
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		"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"
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		+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</font></td>\n"+
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		"	<td bgcolor=\"#4682B4\" align=\"right\"><a href=\"javascript:window.opener.show_calendar('"
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		+str_target+"', '"+dt2dtstr(dt_next_month)+"'+document.cal.time.value);\">"+
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		"<img src=\"images/next.gif\" width=\"16\" height=\"16\" border=\"0\""+
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		" alt=\"next month\"></a></td>\n</tr>\n"
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	);
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	var dt_current_day = new Date(dt_firstday);
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	// print weekdays titles
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	str_buffer += "<tr>\n";
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	for (var n=0; n<7; n++)
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		str_buffer += "	<td bgcolor=\"#87CEFA\">"+
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		"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"+
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		week_days[(n_weekstart+n)%7]+"</font></td>\n";
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	// print calendar table
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	str_buffer += "</tr>\n";
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	while (dt_current_day.getMonth() == dt_datetime.getMonth() ||
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		dt_current_day.getMonth() == dt_firstday.getMonth()) {
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		// print row heder
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		str_buffer += "<tr>\n";
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		for (var n_current_wday=0; n_current_wday<7; n_current_wday++) {
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				if (dt_current_day.getDate() == dt_datetime.getDate() &&
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					dt_current_day.getMonth() == dt_datetime.getMonth())
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					// print current date
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					str_buffer += "	<td bgcolor=\"#FFB6C1\" align=\"right\">";
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				else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
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					// weekend days
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					str_buffer += "	<td bgcolor=\"#DBEAF5\" align=\"right\">";
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				else
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					// print working days of current month
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					str_buffer += "	<td bgcolor=\"white\" align=\"right\">";
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				if (dt_current_day.getMonth() == dt_datetime.getMonth())
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					// print days of current month
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					str_buffer += "<a href=\"javascript:window.opener."+str_target+
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					".value='"+dt2dtstr(dt_current_day)+"'+document.cal.time.value; window.close();\">"+
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					"<font color=\"black\" face=\"tahoma, verdana\" size=\"2\">";
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				else
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					// print days of other months
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					str_buffer += "<a href=\"javascript:window.opener."+str_target+
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					".value='"+dt2dtstr(dt_current_day)+"'+document.cal.time.value; window.close();\">"+
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					"<font color=\"gray\" face=\"tahoma, verdana\" size=\"2\">";
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				str_buffer += dt_current_day.getDate()+"</font></a></td>\n";
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				dt_current_day.setDate(dt_current_day.getDate()+1);
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		}
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		// print row footer
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		str_buffer += "</tr>\n";
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	}
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	// print calendar footer
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	str_buffer +=
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		"<form name=\"cal\">\n<tr><td colspan=\"7\" bgcolor=\"#87CEFA\">"+
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		"<font color=\"White\" face=\"tahoma, verdana\" size=\"2\">"+
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		"Time: <input type=\"text\" name=\"time\" value=\""+dt2tmstr(dt_datetime)+
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		"\" size=\"8\" maxlength=\"8\"></font></td></tr>\n</form>\n" +
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		"</table>\n" +
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		"</tr>\n</td>\n</table>\n" +
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		"</body>\n" +
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		"</html>\n";
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	var vWinCal = window.open("", "Calendar",
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		"width=200,height=250,status=no,resizable=yes,top=200,left=200");
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	vWinCal.opener = self;
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	var calc_doc = vWinCal.document;
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	calc_doc.write (str_buffer);
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	calc_doc.close();
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}
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// datetime parsing and formatting routimes. modify them if you wish other datetime format
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function str2dt (str_datetime) {
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	var re_date = /^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/;
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	if (!re_date.exec(str_datetime))
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		return alert("Invalid Datetime format: "+ str_datetime);
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	return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6));
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}
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function dt2dtstr (dt_datetime) {
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	return (new String (
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			dt_datetime.getDate()+"-"+(dt_datetime.getMonth()+1)+"-"+dt_datetime.getFullYear()+" "));
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}
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function dt2tmstr (dt_datetime) {
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	return (new String (
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			dt_datetime.getHours()+":"+dt_datetime.getMinutes()+":"+dt_datetime.getSeconds()));
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}
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