// Procedures globales du projet
function ds_draw_calendar(m , y, fxd)
{
 	var today = new Date();
 	var todaymonth = new Boolean();
 	var todayday = today.getDate();
 	todaymonth = (m == (today.getMonth() + 1) && y == today.getFullYear());
 	
	var sdaymonth = new Boolean();
	var sdayday = ds_sday.getDate();
	sdaymonth = (m == (ds_sday.getMonth() + 1) && y == ds_sday.getFullYear());
	if (sdaymonth == false){
		if (todaymonth == true){
			sdayday = todayday;
		} else {
	 		sdayday = 0;
	 	}
 	}
 	
	// 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,fxd));
	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_getday(ds_dc_date);
	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!
		if (sdayday == (i + 1)){
			ds_echo (ds_template_dayselect(i + 1, m, y));
		} else if (todayday == (i + 1) && todaymonth == true){
			ds_echo (ds_template_daytoday(i + 1, m, y));
		} else if (j == 5 || j == 6){
			ds_echo (ds_template_daywe(i + 1, m, y));			
		} else {
			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();
	
}

function ds_echo(t)
{
	ds_ob += t;
}

function ds_format_date(d, m, y)
{
	// 2 digits month.
	m2 = '00' + m;
	m2 = m2.substr(m2.length - 2);
	// 2 digits day.
	d2 = '00' + d;
	d2 = d2.substr(d2.length - 2);
	// JJ/MM/AAAA
	return d2 + '/' + m2 + '/' + y;
	
}

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;	
}

function ds_hi()
{
	ds_ce.style.display = 'none';
}

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, 0);
	
}

function ds_ny()
{
	// Increase the current year.
	ds_c_year++;
	// Redraw the calendar.
	ds_draw_calendar(ds_c_month, ds_c_year, 0);
	
}

function ds_ob_clean()
{
	ds_ob = '';
}
function ds_ob_flush()
{
	ds_oe.innerHTML = ds_ob;
	ds_ob_clean();ds_echo	
}

function ds_onclick(d, m, y)
{
	// Hide the calendar.
	ds_hi();

	// Set the value of it, if we can.
	if (typeof(ds_element.value) != 'undefined') {
		ds_element.value = ds_format_date(d, m, y);
		ds_flag.value = 1;
		// Maybe we want to set the HTML in it.
		} else if (typeof(ds_element.innerHTML) != 'undefined') {
		ds_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 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, 0);
}

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, 0 );
	
}

function ds_sh(t,u,ph,pv,fxd)
{
	if (t.value != ''){
		ds_sday = new Date(t.value.substring(6,10),t.value.substring(3,5) - 1,t.value.substring(0,2));
	} else {
		ds_sday = new Date(2100,0,1);
	}
	// Set the element to set...
	ds_element = t;
	ds_flag = 0;
	// Make a new date, and set the current month and year.
	var ds_sh_date = new Date();
	if (ds_sday.getFullYear() != 2100){
		ds_c_month = ds_sday.getMonth() + 1;
		ds_c_year = ds_sday.getFullYear();
	} else {		
		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, fxd);
	// To change the position properly, we must show it first.
	ds_ce.style.display = '';
	// Move the calendar container!
	if (ph == "g"){
		the_left = ds_getright(t) - 185;
	} else {	
		the_left = ds_getleft(t)
	}
	if (pv == "h"){
		the_top = ds_gettop(t) - 171;
	} else {
		the_top = ds_gettop(t) + u.offsetHeight;
	}
	ds_ce.style.left = the_left + 'px';
	ds_ce.style.top = the_top + 'px';
	// Scroll it into view.
	//ds_ce.scrollIntoView();

}

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

function ds_template_day(d, m, y)
{
	return '<td class="ds_cell" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
	// Define width the day row.
	
}

function ds_template_day_row(t)
{
	return '<td class="ds_subhead">' + t + '</td>';
	// Define width in CSS, XHTML 1.0 Strict doesn't have width property for it.
	
}

function ds_template_main_above(m, y, fxd)
{
	var ch = "";
	
	if (fxd == 0){
	ch = '<table cellpadding="3" cellspacing="1" class="ds_tbl">'
		+ '<tr>'
		+ '<td class="ds_head" > </td>'
		+ '<td class="ds_head" style="cursor: pointer" onclick="ds_py();">&lt;</td>'
		+ '<td colspan="3" class="ds_head">' + y + '</td>'
		+ '<td class="ds_head" style="cursor: pointer" onclick="ds_ny();">&gt;</td>'
		+ '<td class="ds_head" style="cursor: pointer" onclick="ds_hi();">X</td>'
		+ '</tr>'
		+ '<tr>'	
		+ '<td colspan="2" class="ds_head" style="cursor: pointer" onclick="ds_pm();">&lt;</td>'
		+ '<td colspan="3" class="ds_head_month">' + m + '</td>'
		+ '<td colspan="2" class="ds_head" style="cursor: pointer" onclick="ds_nm();">&gt;</td>'
		+ '<tr>';
		
		}else{
		
		ch = '<table cellpadding="3" cellspacing="1" class="ds_tbl">'
		+ '<tr>'
		+ '<td class="ds_head" > </td>'
		+ '<td class="ds_head"></td>'
		+ '<td colspan="3" class="ds_head">' + y + '</td>'
		+ '<td class="ds_head"></td>'
		+ '<td class="ds_head" style="cursor: pointer" onclick="ds_hi();">X</td>'
		+ '</tr>'
		+ '<tr>'	
		+ '<td colspan="2" class="ds_head"></td>'
		+ '<td colspan="3" class="ds_head_month">' + m + '</td>'
		+ '<td colspan="2" class="ds_head"></td>'
		+ '<tr>';
		
	}
	
	return ch;
}

function ds_template_main_below()
{
	return '</tr>' + '</table>';
	
}

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

function ds_initgene()
{
	ds_i_date = new Date();
	ds_c_month = ds_i_date.getMonth() + 1;
	ds_c_year = ds_i_date.getFullYear();
	
	ds_oe = ds_getel('ds_calclass');
	ds_ce = ds_getel('ds_conclass');
	ds_ob = '';	
	
	ds_monthnames = ['Janvier','Fev','Mars','Avril','Mai','Juin','Juillet','Août','Septembre','Octobre','Novembre','Décembre'];
	ds_daynames = ['Lun','Mar','Mer','Jeu','Ven','Sam','Dim'];
}


function ds_getday(d)
{
	tmp = d.getDay();
	if (tmp == 0) {
		tmp = 6;
		} else {
		tmp = tmp - 1;
		}
	return tmp;
}
function ds_template_daytoday(d, m, y)
{
	return '<td class="ds_celltoday" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
	// Define width the day row.
	
}

function ds_template_dayselect(d, m, y)
{
	return '<td class="ds_cellselect" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
	// Define width the day row.
	
	
}

function ds_template_daywe(d, m, y)
{
	return '<td class="ds_cellwe" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
	// Define width the day row.
	
}

function ds_getright(el)
{
	var tmp = el.offsetLeft + el.offsetWidth;
	el = el.offsetParent
	while(el) {
		tmp += el.offsetLeft;
		el = el.offsetParent;
		}
	return tmp;
}

function ds_sh2(t,u,v,ph,pv,fxd)
{
	if (t.value != ''){
		ds_sday = new Date(t.value.substring(6,10),t.value.substring(3,5) - 1,t.value.substring(0,2));
	} else {
		ds_sday = new Date(2100,0,1);
	}
	// Set the element to set...
	ds_element = t;
	ds_flag = v;

	// Make a new date, and set the current month and year.
	var ds_sh_date = new Date();
	if (ds_sday.getFullYear() != 2100){
		ds_c_month = ds_sday.getMonth() + 1;
		ds_c_year = ds_sday.getFullYear();
	} else {		
		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, fxd);
	// To change the position properly, we must show it first.
	ds_ce.style.display = '';
	// Move the calendar container!
	if (ph == "g"){
		the_left = ds_getright(t) - 185;
	} else {	
		the_left = ds_getleft(t)
	}
	if (pv == "h"){
		the_top = ds_gettop(t) - 171;
	} else {
		the_top = ds_gettop(t) + u.offsetHeight;
	}
	ds_ce.style.left = the_left + 'px';
	ds_ce.style.top = the_top + 'px';
	// Scroll it into view.
	//ds_ce.scrollIntoView();

}