function updateCalendar(house) {
	var month, year;
	
	month = gup('show_month');
	year  = gup('show_year');
	
	window.location = 'calendar.php?house=' + house + '&show_month=' + month + '&show_year=' + year;
}

function gup(name)
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}

function openCalendar(target, house, month, year) {
	var elem, month, year;
	
	if (target == "begin")
		elem = document.getElementById('e_mes');
	else
		elem = document.getElementById('s_mes');
	
	for (var i = 0; i < elem.length; i++) {
		if (elem[i].selected)
			month = month || elem[i].value;
	}
	
	if (target == "begin")
		elem = document.getElementById('e_ano');
	else
		elem = document.getElementById('s_ano');
	
	for (i = 0; i < elem.length; i++) {
		if (elem[i].selected)
			year = year || elem[i].value;
	}
	
	if (house == null) {
		elem = document.getElementById('house');
		
		for (i = 0; i < elem.length; i++) {
			if (elem[i].selected)
				house = elem[i].value;
		}
	}
	
	window.name = target;
	window.open('calendar.php?house=' + house + '&show_month=' + month + '&show_year=' + year,'','scrollbars=no,menubar=no,height=360,width=260,resizable=no,toolbar=no,location=no,status=yes');
}

function setDay(e)
{
	var targ;
	var date_array;
	var prefix;
	
	if(!e)
		var e = window.event;
		
	if(e.target) 
		targ = e.target;
	else if (e.srcElement)
		targ = e.srcElement;
		
	// Safari bug
	if (targ.nodeType == 3)
   		targ = targ.parentNode
	
	date_array = targ.id.split("-");

	if( window.opener.name == "begin" )
		prefix = "e_";
	else if( window.opener.name == "end" )
		prefix = "s_";
	

	// dia
	window.opener.document.getElementById(prefix + "dia").selectedIndex = date_array[0] - 1;
	// mes
	window.opener.document.getElementById(prefix + "mes").selectedIndex = date_array[1] - 1;
	// ano
	window.opener.document.getElementById(prefix + "ano").selectedIndex = ( date_array[2] % (new Date()).getFullYear() );
	
	window.close();
}