<!--
function show_calendar(str_target, str_date) {
	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 = 0; // day week starts from (normally 0 or 1)

	var dt_date = (str_date == null || str_date =="" ?  new Date() : str2dt(str_date));
	var dt_prev_month = new Date(dt_date);
	dt_prev_month.setMonth(dt_date.getMonth()-1);
	var dt_next_month = new Date(dt_date);
	dt_next_month.setMonth(dt_date.getMonth()+1);
	var dt_firstday = new Date(dt_date);
	dt_firstday.setDate(1);
	dt_firstday.setDate(1-(7+dt_firstday.getDay()-n_weekstart)%7);
	var dt_lastday = new Date(dt_next_month);
	dt_lastday.setDate(0);
	
	// html generation (feel free to tune it for your particular application)
	// print calendar header
	var str_buffer = new String (
		"<html>\n"+
		"<head>\n"+
		"	<title>Book an appointment</title>\n"+
		"</head>\n"+
		"<body bgcolor=\"White\">\n"+
		"<table class=\"clsOTable\" cellspacing=\"0\" cellspadding=\"0\" border=\"0\" width=\"100%\">\n"+
		"<tr><td bgcolor=\"#999999 \">\n"+
		"<table cellspacing=\"0\" cellpadding=\"4\" border=\"0\" width=\"100%\">\n"+
		"<tr>\n	<td bgcolor=\"#000000\"><a href=\"javascript:window.opener.show_calendar('"+
		str_target+"', '"+ dt2dtstr(dt_prev_month)+"');\">"+
		"<img src=\"images/cal/prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
		" alt=\"previous month\"></a></td>\n"+
		"	<td bgcolor=\"#000000\" colspan=\"5\" align=\"center\">"+
		"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"
		+arr_months[dt_date.getMonth()]+" "+dt_date.getFullYear()+"</font></td>\n"+
		"	<td bgcolor=\"#000000\" align=\"center\"><a href=\"javascript:window.opener.show_calendar('"
		+str_target+"', '"+dt2dtstr(dt_next_month)+"');\">"+
		"<img src=\"images/cal/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=\"#FBCA25\">"+
		"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"+
		week_days[(n_weekstart+n)%7]+"</font></td>\n";
	// print calendar table
	str_buffer += "</tr>\n";
	while (dt_current_day.getMonth() == dt_date.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_date.getDate() &&
					dt_current_day.getMonth() == dt_date.getMonth())
					// print current date
					str_buffer += "	<td bgcolor=\"#FBCA25\" align=\"center\">";
				else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
					// weekend days
					str_buffer += "	<td bgcolor=\"#FFFFCC\" align=\"center\">";
				else
					// print working days of current month
					str_buffer += "	<td bgcolor=\"white\" align=\"center\">";

				if (dt_current_day.getMonth() == dt_date.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\">";
				else 
					// 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";
				dt_current_day.setDate(dt_current_day.getDate()+1);
		}
		// print row footer
		str_buffer += "</tr>\n";
	}
	// print calendar footer
	str_buffer +=
		"</table>\n" +
		"</tr>\n</td>\n</table>\n" +
		"</body>\n" +
		"</html>\n";

	var vWinCal = window.open("", "Calendar", 
		"width=280,height=235,status=no,resizable=yes,top=220,left=220");
	vWinCal.opener = self;
	var calc_doc = vWinCal.document;
	calc_doc.write (str_buffer);
	calc_doc.close();
}
//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
Date.prototype.customFormat = function(formatString){
	var YYYY,YY,MMMM,MMM,MM,M,DDDD,DDD,DD,D,hhh,hh,h,mm,m,ss,s,ampm,AMPM,dMod,th;
	var dateObject = this;
	YY = ((YYYY=dateObject.getFullYear())+"").slice(-2);
	MM = (M=dateObject.getMonth()+1)<10?('0'+M):M;
	MMM = (MMMM=["January","February","March","April","May","June","July","August","September","October","November","December"][M-1]).substring(0,3);
	DD = (D=dateObject.getDate())<10?('0'+D):D;
	DDD = (DDDD=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"][dateObject.getDay()]).substring(0,3);
	th=(D>=10&&D<=20)?'th':((dMod=D%10)==1)?'st':(dMod==2)?'nd':(dMod==3)?'rd':'th';
	formatString = formatString.replace("#YYYY#",YYYY).replace("#YY#",YY).replace("#MMMM#",MMMM).replace("#MMM#",MMM).replace("#MM#",MM).replace("#M#",M).replace("#DDDD#",DDDD).replace("#DDD#",DDD).replace("#DD#",DD).replace("#D#",D).replace("#th#",th);

	h=(hhh=dateObject.getHours());
	if (h==0) h=24;
	if (h>12) h-=12;
	hh = h<10?('0'+h):h;
	AMPM=(ampm=hhh<12?'am':'pm').toUpperCase();
	mm=(m=dateObject.getMinutes())<10?('0'+m):m;
	ss=(s=dateObject.getSeconds())<10?('0'+s):s;
	return formatString.replace("#hhh#",hhh).replace("#hh#",hh).replace("#h#",h).replace("#mm#",mm).replace("#m#",m).replace("#ss#",ss).replace("#s#",s).replace("#ampm#",ampm).replace("#AMPM#",AMPM);
}
// date parsing and formatting routines. modify them if you wish other date format
function str2dt (str_date) {
	var re_date = /^(\d+)\/(\d+)\/(\d+)$/;
	if (!re_date.exec(str_date))
		return alert("Invalid Date format: "+ str_date);
	return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1));
}
function dt2dtstr (dt_date) {
var myString = dt_date.customFormat("#DD#/#MM#/#YYYY#"); 
	return (myString);
}
//-->
