function CalendarObj(){
	this.currentday = null;
	this.selectedday = new Array();

	this.SelectDay = function(fieldid,dayid,date){
		if(document.getElementById(fieldid+dayid).className=="current"){
			this.currentday = dayid;
		}	
		if(this.selectedday[fieldid]!=null && document.getElementById(fieldid+this.selectedday[fieldid])){
			document.getElementById(fieldid+this.selectedday[fieldid]).className = (this.selectedday[fieldid]==this.currentday)?"current":"";
		}
		document.getElementById(fieldid+dayid).className = "selected";
		this.selectedday[fieldid] = dayid;
		document.getElementById("date_"+fieldid).value = date;
		
		this.SetEpoch(fieldid);
	};

	this.NextHour = function(fieldid){
		var hour = Number(document.getElementById("hour_"+fieldid).value);
			hour = (hour==23)?0:hour+1;	
		document.getElementById("hour_"+fieldid).value = (hour<10)?"0"+hour:hour;
		this.SetEpoch(fieldid);
	};

	this.PrevHour = function(fieldid){
		var hour = Number(document.getElementById("hour_"+fieldid).value);
		hour = (hour==0)?23:hour-1;
		document.getElementById("hour_"+fieldid).value = (hour<10)?"0"+hour:hour;
		this.SetEpoch(fieldid);
	};

	this.NextMin = function(fieldid){
		var min = Number(document.getElementById("min_"+fieldid).value);
			min = (min==59)?0:min+1;	
		document.getElementById("min_"+fieldid).value = (min<10)?"0"+min:min;
		this.SetEpoch(fieldid);
	};

	this.PrevMin = function(fieldid){
		var min = Number(document.getElementById("min_"+fieldid).value);
		min = (min==0)?59:min-1;
		document.getElementById("min_"+fieldid).value = (min<10)?"0"+min:min;
		this.SetEpoch(fieldid);		
	};
	
	this.SetEpoch = function(fieldid){
		document.getElementById("hidden_"+fieldid).value = Number(this.selectedday[fieldid])+3600000*Number(document.getElementById("hour_"+fieldid).value)+60000*Number(document.getElementById("min_"+fieldid).value);
	};	

	this.SetTime = function(fieldid,closeafterset){
		if(this.selectedday[fieldid]){
			document.getElementById(fieldid).value = document.getElementById("hidden_"+fieldid).value;
			document.getElementById("displayarea_"+fieldid).innerHTML = document.getElementById("date_"+fieldid).value+" "+document.getElementById("hour_"+fieldid).value+":"+document.getElementById("min_"+fieldid).value;
			if(closeafterset==true){
				this.Close("container_"+fieldid);
			}
		}else{
			alert("Valitse p\u00e4iv\u00e4 kalenterista.");
		}
			
		
	};	

	this.Open = function(container){
		document.getElementById(container).style.display="";
	};

	this.Close = function(container){
		document.getElementById(container).style.display="none";
	};
	
	this.ResetTime = function(fieldid){
		document.getElementById("hidden_"+fieldid).value = "";
		document.getElementById(fieldid).value = "";
		document.getElementById("displayarea_"+fieldid).innerHTML = "--.--.---- --:--";
		
	};	
	
	this.GetTime = function(fieldid){
		if(document.getElementById(fieldid)){
			return document.getElementById(fieldid).value;
		}else{
			return "";
		}
	};	
	
}

var Calendar = new CalendarObj();