
var IE = document.all?true:false;
if (!IE) document.captureEvents(Event.MOUSEMOVE)
document.onmousemove = getMouseXY;
var tempX = 0;
var tempY = 0;
function getMouseXY(e) {
if (IE) { // grab the x-y pos.s if browser is IE
tempX = event.clientX + document.body.scrollLeft;
tempY = event.clientY + document.body.scrollTop;
}
else {  // grab the x-y pos.s if browser is NS
tempX = e.pageX;
tempY = e.pageY;
}  
if (tempX < 0){tempX = 0;}
if (tempY < 0){tempY = 0;}  
aax = tempX;
aay = tempY;
return true;
}


function show_calendar(str_target, str_datetime,ay,ax) {

	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);
	dt_prev_month.setMonth(dt_datetime.getMonth()-1);
	var dt_next_month = new Date(dt_datetime);
	dt_next_month.setMonth(dt_datetime.getMonth()+1);
	var dt_firstday = new Date(dt_datetime);
	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> </title>\n"+
    "<style>\n"+
    ".wh{color: white; font-size: 12pt; font-family: arial, sans-serif;}\n"+
    ".bl{color: black; font-size: 12pt; font-family: arial, sans-serif;}\n"+
    ".gr{color: gray; font-size: 12pt; font-family: arial, sans-serif;}\n"+
    "</style>\n"+
		"</head>\n" );		
		
	str_buffer +="<body bgcolor=\"White\" style=\"margin: 0px;\">\n"+
		"<div id=\"cont\">\n"+
		"<table  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\" class=\"wh\">"+
		arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</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\" class=\"wh\">"+
				week_days[(n_weekstart+n)%7]+"</td>\n";
    }
	// 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\">";
				else
					// 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.opener."+str_target+".focus(); window.close();\" class=\"bl\">"
				else 
					// print days of other months
					str_buffer += "<a href=\"javascript:window.opener."+str_target+
					".value='"+dt2dtstr(dt_current_day)+"'; window.opener."+str_target+".focus(); window.close();\" class=\"gr\">"
						
				str_buffer += dt_current_day.getDate()+"</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" +
		"</div>"+
		"</body>\n" +
		"</html>\n";
		

	var vWinCal = window.open("", "Calendar","width=250,height=180,status=no,resizable=no,top="+ax+",left="+ay);
	vWinCal.opener = self;
	var calc_doc = vWinCal.document;
	calc_doc.write (str_buffer);
	
	vWinCal.innerWidth=calc_doc.getElementById("cont").offsetWidth
	vWinCal.innerHeight=calc_doc.getElementById("cont").offsetHeight

	calc_doc.close();
}


function str2dt (str_datetime) {
	var re_date = /^(\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));
}


function dt2dtstr (dt_datetime) {

day=dt_datetime.getDate();

if(day < 10) n_day='0'+day; else n_day=day;

month=(dt_datetime.getMonth()+1);

if(month < 10) n_month='0'+month; else n_month=month;

year=dt_datetime.getFullYear()

return (new String(n_day+'-'+n_month+'-'+year));
}


function dt2tmstr (dt_datetime) {
	return;
}
