function isDefined(variable){
	return (typeof(variable) == 'undefined')? false : true;
}

function ajax_get_date()
{ 
	var req,datum,month,year;

	try { req = new XMLHttpRequest(); }
	catch (ms) {
		try	{ req = new ActiveXObject("Msxml2.XMLHTTP"); } 
		catch (nonms) {
			try	{ req = new ActiveXObject("Microsoft.XMLHTTP");	} 
			catch (failed) { req = null; }
		}  
	}
	
	if (req != null)
	{
		req.open("POST", 'http://www.frogfish-studios.de/ajax/studio_common.php', true);
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

		req.onreadystatechange = function (){            
			switch(req.readyState) 
			{
				case 4:
					if(req.status!=200) 
					{
		// AJAX Request fehlerhaft
		
					}
					else
					{
						datum = new Date();
						if (isDefined(req.responseXML.getElementsByTagName("month")[0])) {
							month = req.responseXML.getElementsByTagName("month")[0].firstChild.nodeValue;
						} 
						else month = datum.getMonth() + 1;
						
						if (isDefined(req.responseXML.getElementsByTagName("year")[0])) {
							year = req.responseXML.getElementsByTagName("year")[0].firstChild.nodeValue;
						}
						else year = datum.getFullYear();

						bigcal_fill(1, month, year);
					}
					break;
		
				default:
					return false;
					break;     
			}
		};
		
		req.send("action=getdate");
	}
}

function Numsort (a, b) {
  return a - b;
}

function make_bigcal()
{
	var slot,y,newday,newdaylabel;

	slot = 0;
	
	for (y=1; y <= 42; y++) 
	{
		if ((y%7)==0) newday = new Element('div',{'class':'bigcal_tag','id':('bigcal_slot' + slot),'style':'margin-right:0px;'});
		else newday = new Element('div',{'class':'bigcal_tag','id':('bigcal_slot' + slot)});
		newday.inject($('bigcal_tage'));
		newdaylabel = new Element('div',{'class':'minical_tag','id':('bigcal_tagnr' + slot),'style':'margin-left:5px;margin-top:5px;'});
		newdaylabel.inject(newday);
		newdaycheck = new Element('div',{'class':'bigcal_check','id':('bigcal_check' + slot),'style':'margin-left:20px;margin-top:0px;'});
		newdaycheck.inject(newday);
		slot++;
	}

//	daylist = new Element('input',{'class':'bigcal_daylist'});
//	daylist.inject($('bigcal_rightnav'));
	
	$('bigcal_monat').set('text',"aktueller Monat");
	$('bigcal_inc').addEvent('click', function(e) {bigcal_inc();});
	$('bigcal_dec').addEvent('click', function(e) {bigcal_dec();});
	
	ajax_get_date();
}

function bigcal_fill(cal,month,year)
{
	var datum,nowtime,monthname,i,j,day,datumtime;

	datum = new Date();
	nowtime = datum.getTime();
	datum.setDate(1);

	monthname = new Array("Januar","Februar","März","April","Mai","Juni","Juli","August","September","Oktober","November","Dezember");

	if (typeof(month) == 'undefined') month = datum.getMonth()+1;
	if (typeof(year) == 'undefined') year = datum.getFullYear();

	if ((month >= 1) && (month <= 12))
	{
		datum.setMonth(month - 1);
	}
	else month = datum.getMonth() + 1;
// Year zweistellig bedeutet relativ zu 2000!

	if (year != 0)
	{
		if (year < 100) year = year + 2000;
		datum.setFullYear(year);
	}
	else year = datum.getFullYear();

	datum.setDate(1);
	
	day = datum.getDay();
	day = day - 1;
	if (day < 0) day = 6;
	i = 1;
	
	datumtime = 0;
	
	for (j=0;j<day;j++)
	{
		$(('bigcal_slot'+j)).setStyle('background-image','');
		$(('bigcal_tagnr'+j)).setStyle('background-image','');
	}
	while (datum.getMonth() == (month - 1))
	{
		datumtime = datum.getTime();
		
//		$(('bigcal_slot'+(i+day-1))).setStyle('background-image','url("img/kalender/kalender_'+i+'.gif")');
		$(('bigcal_slot'+(i+day-1))).setStyle('background-image','url("img/kalender/kalender_bigcal_tag_slim.gif")');
		$(('bigcal_tagnr'+(i+day-1))).setStyle('background-image','url("img/kalender/kalender_'+i+'.gif")');
		
		if (datumtime<nowtime) 
		{
			$(('bigcal_slot'+(i+day-1))).removeEvents();
			$(('bigcal_slot'+(i+day-1))).setStyle('opacity','0.3');
		}
		else 
		{
			$(('bigcal_slot'+(i+day-1))).setStyle('opacity','1.0');
			$(('bigcal_slot'+(i+day-1))).removeEvents();
			$(('bigcal_slot'+(i+day-1))).addEvent('mouseenter', function(e) {this.setStyle('opacity','0.5');});
			$(('bigcal_slot'+(i+day-1))).addEvent('mouseleave', function(e) {this.setStyle('opacity','1.0');});
			$(('bigcal_slot'+(i+day-1))).addEvent('click', function(e) {bigcal_ajax_toggleday(e.target,day);});
			
		}
		
		i++;
		datum.setDate(datum.getDate()+1);
	}
	for (j=(i+day-1);j<42;j++)
	{
		$(('bigcal_slot'+j)).setStyle('background-image','');
		$(('bigcal_tagnr'+j)).setStyle('background-image','');
	}

	bigcal_ajax(cal,month,year,day);

	$('bigcal_monat').set('text',monthname[month-1] + " " + year);
}

function bigcal_ajax(cal,month,year,bigcal_start)
{ 
	var req,now,nowtime,datum,termine,len,i,termin,tag,status;
	
	try
	{
		req = new XMLHttpRequest();
	}
	catch (ms)
	{
		try
		{
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (nonms)
		{
			try
			{
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (failed)
			{
				req = null;
			}
		}  
	}
	
	if (req != null)
	{
		req.open("POST", 'http://www.frogfish-studios.de/ajax/studio_common.php', true);
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

		req.onreadystatechange = function (){            
			switch(req.readyState) 
			{
				case 4:
					if(req.status!=200) 
					{
		// AJAX Request fehlerhaft
					}
					else
					{
						// TERMINE
						now = new Date();
						now.setHours(0);
						now.setMinutes(0);
						now.setSeconds(0);
						nowtime = now.getTime();
						
						datum = new Date();
						datum.setTime(0);
						datum.setMonth(parseInt(month)-1);
						datum.setYear(parseInt(year));	

						if (isDefined(req.responseXML.getElementsByTagName("kalender")[0])) {
							termine = req.responseXML.getElementsByTagName("termin");
							len=termine.length;

							for (i=0; i < 42; i++) 
							{
								if ($('bigcal_check' + i) != null)
								{
									$('bigcal_check' + i).setStyle('background-image', '');
								}
							}
							
							for (i=0;i<len;i++) 
							{
								termin = termine[i];
								
								if (isDefined(termin.childNodes)) {
									tag = parseInt(termin.childNodes[0].firstChild.nodeValue);
									status = termin.childNodes[1].firstChild.nodeValue;

									datum.setDate(tag);
									if (datum.getTime() < nowtime) {
										$(('bigcal_slot' + (tag + bigcal_start - 1))).removeEvents();
										$(('bigcal_slot' + (tag + bigcal_start - 1))).setStyle('opacity', '0.5');
									}
									else {
										switch (status) {
											case '1':
												$(('bigcal_slot' + (tag + bigcal_start - 1))).setStyle('opacity', '1.0');
												$(('bigcal_check' + (tag + bigcal_start - 1))).setStyle('opacity', '0.3');
												$(('bigcal_check' + (tag + bigcal_start - 1))).setStyle('background-image', 'url("img/kalender/check_query.gif")');												
												$(('bigcal_slot' + (tag + bigcal_start - 1))).removeEvents();
												$(('bigcal_slot' + (tag + bigcal_start - 1))).addEvent('mouseenter', function(e){this.setStyle('opacity', '0.5');});
												$(('bigcal_slot' + (tag + bigcal_start - 1))).addEvent('mouseleave', function(e){this.setStyle('opacity', '1.0');});
												$(('bigcal_slot' + (tag + bigcal_start - 1))).addEvent('click', function(e) {bigcal_ajax_toggleday(e.target,bigcal_start);});
												break;
											case '2':
												$(('bigcal_slot' + (tag + bigcal_start - 1))).setStyle('opacity', '0.3');
												$(('bigcal_check' + (tag + bigcal_start - 1))).setStyle('background-image', 'url("img/kalender/check_no.gif")');
												$(('bigcal_slot' + (tag + bigcal_start - 1))).removeEvents();
												break;
											default:
												$(('bigcal_slot' + (tag + bigcal_start - 1))).setStyle('opacity', '1.0');
												$(('bigcal_slot' + (tag + bigcal_start - 1))).removeEvents();
												$(('bigcal_slot' + (tag + bigcal_start - 1))).addEvent('mouseenter', function(e){this.setStyle('opacity', '0.5');});
												$(('bigcal_slot' + (tag + bigcal_start - 1))).addEvent('mouseleave', function(e){this.setStyle('opacity', '1.0');});
												break;
										}
									}
								}
							}
							
						}
						// AUSWAHL
						var daylist = "";
						
						for (i = 0; (i < req.responseXML.getElementsByTagName("auswahl").length); i++) {
							auswahl = req.responseXML.getElementsByTagName("auswahl")[i];
							auswahl_day = auswahl.getElementsByTagName("day")[0].firstChild.nodeValue;
							auswahl_month = auswahl.getElementsByTagName("month")[0].firstChild.nodeValue;
							auswahl_year = auswahl.getElementsByTagName("year")[0].firstChild.nodeValue;
							
							status_image = 'url("img/kalender/check_ok.gif")';
							status_text = 'Termin verfügbar';
							status_style = 'default';
							if (auswahl.getElementsByTagName("day")[0].getAttribute('status') == "2") 
							{
								status_image = 'url("img/kalender/check_no.gif")';
								status_text = 'Termin nicht verfügbar';
								status_style = 'confirmed';
							}
							if (auswahl.getElementsByTagName("day")[0].getAttribute('status') == "1") 
							{
								status_image = 'url("img/kalender/check_query.gif")';
								status_text = 'weitere Anfrage';
								status_style = 'requested';
						}
							if(auswahl.getElementsByTagName("day")[0].getAttribute('inmonth')=="true")
							{
								$(('bigcal_check'+(parseInt(auswahl_day)+bigcal_start-1))).setStyle('background-image',status_image);
								$(('bigcal_check'+(parseInt(auswahl_day)+bigcal_start-1))).setStyle('opacity', '1.0');
							}
							auswahl_daylong = auswahl.getElementsByTagName("daylong")[0].firstChild.nodeValue;
							daylist = "<font class='" + status_style + "'>" + daylist + auswahl_daylong + "." + auswahl_month + "." + auswahl_year + "  -  " + status_text + "</font><br />";															
						}
						document.getElementById('bigcal_rightnav').innerHTML = daylist;
					}
					break;
		
				default:
					return false;
					break;     
			}
		};
		
		req.send("action=getcalender&cal="+cal);
	}
}

function bigcal_inc() 
{
	var req,datum,month,year;
	
	try { req = new XMLHttpRequest(); }
	catch (ms) {
		try	{ req = new ActiveXObject("Msxml2.XMLHTTP"); } 
		catch (nonms) {
			try	{ req = new ActiveXObject("Microsoft.XMLHTTP");	} 
			catch (failed) { req = null; }
		}  
	}
	
	if (req != null)
	{
		req.open("POST", 'http://www.frogfish-studios.de/ajax/studio_common.php', true);
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

		req.onreadystatechange = function (){            
			switch(req.readyState) 
			{
				case 4:
					if(req.status!=200) 
					{
		// AJAX Request fehlerhaft
		
					}
					else
					{
						datum = new Date();
						if (isDefined(req.responseXML.getElementsByTagName("month")[0])) {
							month = req.responseXML.getElementsByTagName("month")[0].firstChild.nodeValue;
						} 
						else month = datum.getMonth() + 1;
						
						if (isDefined(req.responseXML.getElementsByTagName("year")[0])) {
							year = req.responseXML.getElementsByTagName("year")[0].firstChild.nodeValue;
						}
						else year = datum.getFullYear();

						bigcal_fill(1, month, year);
					}
					break;
		
				default:
					return false;
					break;     
			}
		};
		
		req.send("action=incdate");
	}
}

function bigcal_dec() { 

	var req,datum,month,year;

	try { req = new XMLHttpRequest(); }
	catch (ms) {
		try	{ req = new ActiveXObject("Msxml2.XMLHTTP"); } 
		catch (nonms) {
			try	{ req = new ActiveXObject("Microsoft.XMLHTTP");	} 
			catch (failed) { req = null; }
		}  
	}
	
	if (req != null)
	{
		req.open("POST", 'http://www.frogfish-studios.de/ajax/studio_common.php', true);
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

		req.onreadystatechange = function (){            
			switch(req.readyState) 
			{
				case 4:
					if(req.status!=200) 
					{
		// AJAX Request fehlerhaft
		
					}
					else
					{
						datum = new Date();
						if (isDefined(req.responseXML.getElementsByTagName("month")[0])) {
							month = req.responseXML.getElementsByTagName("month")[0].firstChild.nodeValue;
						} 
						else month = datum.getMonth() + 1;
						
						if (isDefined(req.responseXML.getElementsByTagName("year")[0])) {
							year = req.responseXML.getElementsByTagName("year")[0].firstChild.nodeValue;
						}
						else year = datum.getFullYear();

						bigcal_fill(1, month, year);
					}
					break;
		
				default:
					return false;
					break;     
			}
		};
		
		req.send("action=decdate");
	}
}

function bigcal_ajax_toggleday(slot,start)
{ 
	var day,slotnr_tens,slotnr_ones,auswahl_year,auswahl_month,auswahl_day;
	var req,now,nowtime,datum,termine,len,i,termin,tag,status;
	
	day = 0;
	slotnr_ones=parseInt(slot.id.charAt(slot.id.length-1));
	slotnr_tens=parseInt(slot.id.charAt(slot.id.length-2));

	if (!isNaN(slotnr_tens)) day = day + slotnr_tens*10;
	if (!isNaN(slotnr_ones)) day = day + slotnr_ones;
		
	try
	{
		req = new XMLHttpRequest();
	}
	catch (ms)
	{
		try
		{
			req = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (nonms)
		{
			try
			{
				req = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (failed)
			{
				req = null;
			}
		}  
	}
	
	if (req != null)
	{
		req.open("POST", 'http://www.frogfish-studios.de/ajax/studio_common.php', true);
		req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

		req.onreadystatechange = function (){            
			switch(req.readyState) 
			{
				case 4:
					if(req.status!=200) 
					{
		// AJAX Request fehlerhaft
					}
					else
					{
						datum = new Date();
						if (isDefined(req.responseXML.getElementsByTagName("month")[0])) {
							month = req.responseXML.getElementsByTagName("month")[0].firstChild.nodeValue;
						} 
						else month = datum.getMonth() + 1;
						
						if (isDefined(req.responseXML.getElementsByTagName("year")[0])) {
							year = req.responseXML.getElementsByTagName("year")[0].firstChild.nodeValue;
						}
						else year = datum.getFullYear();

						bigcal_fill(1, month, year);
						get_page('this');
					}
					break;
		
				default:
					return false;
					break;     
			}
		};
	
		req.send("action=toggleday&day="+(day-start+1));
	}
	
}