document.writeln('<table class="ds_box" cellpadding="0" cellspacing="0" id="ds_conclass" style="display: none;">');
document.writeln('<tr><td id="ds_calclass">&nbsp;</td></tr></table>');

var ds_i_date = new Date();
ds_c_month = ds_i_date.getMonth() + 1;
ds_c_year = ds_i_date.getFullYear();

function ds_getel(id) {
	return document.getElementById(id);
}
function ds_getleft(el) {
	var tmp = el.offsetLeft;
	el = el.offsetParent
	while(el) {
		tmp += el.offsetLeft;
		el = el.offsetParent;
	}
	return tmp;
}
function ds_gettop(el) {
	var tmp = el.offsetTop;
	el = el.offsetParent
	while(el) {
		tmp += el.offsetTop;
		el = el.offsetParent;
	}
	return tmp;
}
var ds_oe = ds_getel('ds_calclass');
var ds_ce = ds_getel('ds_conclass');
var ds_ob = '';
function ds_ob_clean() {
	ds_ob = '';
}
function ds_ob_flush() {
	ds_oe.innerHTML = ds_ob;
	ds_ob_clean();
}
function ds_echo(t) {
	ds_ob += t;
}

var ds_element; // Text Element...
var out_element = null;

var ds_monthnames = [
'January', 'February', 'March', 'April', 'May', 'June',
'July', 'August', 'September', 'October', 'November', 'December'
]; // You can translate it for your language.

var ds_daynames = [
'Sun','Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'
]; // You can translate it for your language.

function ds_template_main_above(t) {
	return '<table cellpadding="0" cellspacing="0" border="0" class="ds_tbl">'
	     + '<tr>'
		 + '<td class="ds_head" style="cursor: pointer" onclick="ds_py();">&lt;&lt;</td>'
		 + '<td class="ds_head" style="cursor: pointer" onclick="ds_pm();">&lt;</td>'
		 //+ '<td class="ds_head" style="cursor: pointer" onclick="ds_hi();" colspan="3">[Close]</td>'
		 + '<td class="ds_head" colspan="3">&nbsp;</td>'
		 + '<td class="ds_head" style="cursor: pointer" onclick="ds_nm();">&gt;</td>'
		 + '<td class="ds_head" style="cursor: pointer" onclick="ds_ny();">&gt;&gt;</td>'
		 + '</tr>'
	     + '<tr>'
		 + '<td colspan="7" class="ds_head">' + t + '</td>'
		 + '</tr>'
		 + '<tr>';
}

function ds_template_day_row(t) {
	return '<td class="ds_subhead">' + t + '</td>';
}

function ds_template_new_week() {
	return '</tr><tr>';
}

function ds_template_blank_cell(colspan) {
	return '<td class="ds_cell_empty" colspan="' + colspan + '">0</td>'
}

function ds_template_day(d, m, y) {
	var now_date = new Date();
	var now_day = now_date.getDate();
	if (now_day == d){
		return '<td class="ds_cell_day" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
	}
	else {
		return '<td class="ds_cell" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
	}
}

function ds_template_main_below() {
	return '</tr>'
	     + '</table><table width="100%"><tr><td class="time">Time:</td><td><input id="time" type="text" name="time" size="10" value="'+ds_time()+'"></td><td align="right"><a href="javascript:ds_hi()">Close</a></td></tr></table>';
}
function ds_draw_calendar(m, y) {
	// First clean the output buffer.
	ds_ob_clean();
	// Here we go, do the header
	ds_echo (ds_template_main_above(ds_monthnames[m - 1] + ' ' + y));
	for (i = 0; i < 7; i ++) {
		ds_echo (ds_template_day_row(ds_daynames[i]));
	}
	// Make a date object.
	var ds_dc_date = new Date();
	ds_dc_date.setMonth(m - 1);
	ds_dc_date.setFullYear(y);
	ds_dc_date.setDate(1);
	if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
		days = 31;
	} else if (m == 4 || m == 6 || m == 9 || m == 11) {
		days = 30;
	} else {
		days = (y % 4 == 0) ? 29 : 28;
	}
	var first_day = ds_dc_date.getDay();
	var first_loop = 1;
	// Start the first week
	ds_echo (ds_template_new_week());
	// If sunday is not the first day of the month, make a blank cell...
	if (first_day != 0) {
		ds_echo (ds_template_blank_cell(first_day));
	}
	var j = first_day;
	for (i = 0; i < days; i ++) {
		// Today is sunday, make a new week.
		// If this sunday is the first day of the month,
		// we've made a new row for you already.
		if (j == 0 && !first_loop) {
			// New week!!
			ds_echo (ds_template_new_week());
		}
		// Make a row of that day!
		ds_echo (ds_template_day(i + 1, m, y));
		// This is not first loop anymore...
		first_loop = 0;
		// What is the next day?
		j ++;
		j %= 7;
	}
	// Do the footer
	ds_echo (ds_template_main_below());
	// And let's display..
	ds_ob_flush();
	// Scroll it into view.
	//ds_ce.scrollIntoView();
}

// Get the time
function ds_time(){
var dt_datetime = new Date();
return (new String (dt_datetime.getHours()+":"+dt_datetime.getMinutes()+":"+dt_datetime.getSeconds()));
}

// A function to show the calendar.
// When user click on the date, it will set the content of t.
function ds_sh(t,o) {
	// Set the element to set...
	ds_element = t;
	out_element =document.getElementById(o);
	// Make a new date, and set the current month and year.
	var ds_sh_date = new Date();
	ds_c_month = ds_sh_date.getMonth() + 1;
	ds_c_year = ds_sh_date.getFullYear();
	// Draw the calendar
	ds_draw_calendar(ds_c_month, ds_c_year);
	// To change the position properly, we must show it first.
	ds_ce.style.display = '';
	// Move the calendar container!
	the_left = ds_getleft(t);
	the_top = ds_gettop(t) + t.offsetHeight;
	ds_ce.style.left = the_left + 'px';
	ds_ce.style.top = the_top + 'px';
	// Scroll it into view.
	//ds_ce.scrollIntoView();
}

// Hide the calendar.
function ds_hi() {
	ds_ce.style.display = 'none';
}

// Moves to the next month...
function ds_nm() {
	// Increase the current month.
	ds_c_month ++;
	// We have passed December, let's go to the next year.
	// Increase the current year, and set the current month to January.
	if (ds_c_month > 12) {
		ds_c_month = 1;
		ds_c_year++;
	}
	// Redraw the calendar.
	ds_draw_calendar(ds_c_month, ds_c_year);
}

// Moves to the previous month...
function ds_pm() {
	ds_c_month = ds_c_month - 1; // Can't use dash-dash here, it will make the page invalid.
	// We have passed January, let's go back to the previous year.
	// Decrease the current year, and set the current month to December.
	if (ds_c_month < 1) {
		ds_c_month = 12;
		ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
	}
	// Redraw the calendar.
	ds_draw_calendar(ds_c_month, ds_c_year);
}

// Moves to the next year...
function ds_ny() {
	// Increase the current year.
	ds_c_year++;
	// Redraw the calendar.
	ds_draw_calendar(ds_c_month, ds_c_year);
}

// Moves to the previous year...
function ds_py() {
	// Decrease the current year.
	ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
	// Redraw the calendar.
	ds_draw_calendar(ds_c_month, ds_c_year);
}

// Format the date to output.
function ds_format_date(d, m, y) {
/*evk
	if (IsValidTime(ds_getel("time").value)){
		// 2 digits month.
		m2 = '00' + m;
		m2 = m2.substr(m2.length - 2);
		// 2 digits day.
		d2 = '00' + d;
		d2 = d2.substr(d2.length - 2);
		// YYYY-MM-DD
		return y + '-' + m2 + '-' + d2 + ' '+ds_getel("time").value;
	}
	else {
		return "";
	}
*/
	// 2 digits month.
		m2 = '00' + m;
		m2 = m2.substr(m2.length - 2);
		// 2 digits day.
		d2 = '00' + d;
		d2 = d2.substr(d2.length - 2);
		// YYYY-MM-DD
		return y + '-' + m2 + '-' + d2;
}

// When the user clicks the day.
function ds_onclick(d, m, y) {
	// Hide the calendar.
	ds_hi();
	// Set the value of it, if we can.
	if (typeof(out_element.value) != 'undefined') {
		out_element.value = ds_format_date(d, m, y);
	// Maybe we want to set the HTML in it.
	} else if (typeof(out_element.innerHTML) != 'undefined') {
		out_element.innerHTML = ds_format_date(d, m, y);
	// I don't know how should we display it, just alert it to user.
	} else {
		alert (ds_format_date(d, m, y));
	}
}
function IsValidTime(timeStr) {
	// Checks if time is in HH:MM:SS AM/PM format.
	// The seconds and AM/PM are optional.

	var timePat = /^(\d{1,2}):(\d{1,2})(:(\d{1,2}))?(\s?(AM|am|PM|pm))?$/;

	var matchArray = timeStr.match(timePat);
	if (matchArray == null) {
		alert("Time is not in a valid format.");
		return false;
	}
	hour = matchArray[1];
	minute = matchArray[2];
	second = matchArray[4];
	ampm = matchArray[6];

	if (second=="") { second = null; }
	if (ampm=="") { ampm = null }

	if (hour < 0  || hour > 23) {
		alert("Hour must be between 1 and 12. (or 0 and 23)");
		return false;
	}
	/*if (hour <= 12 && ampm == null) {
		if (confirm("Please indicate which time format you are using.  OK = Standard Time, CANCEL = Military Time")) {
			alert("You must specify AM or PM.");
			return false;
   		}
	}
	if  (hour > 12 && ampm != null) {
		alert("You can't specify AM or PM for military time.");
		return false;
	}*/
	if (minute<0 || minute > 59) {
		alert ("Minute must be between 0 and 59.");
		return false;
	}
	if (second != null && (second < 0 || second > 59)) {
		alert ("Second must be between 0 and 59.");
		return false;
	}
	return true;
}