function getthedate(){

	//Variables para definir las horas en que cambia la clase

	var hourDay = '06';
	var MinuteDay = '00';
	var SecondDay = '00';

	var hourNight = '17';
	var MinuteNight = '00';
	var SecondNight = '00';

	// No tocar
	// ********************************************************************//
	var mydate	=	new Date();
	var hours	=	mydate.getHours();
	var minutes	=	mydate.getMinutes();
	var seconds	=	mydate.getSeconds();
	
	var dn="AM";

	//if (hours>=12) dn="PM";
	//if (hours>12) hours=hours-12;  
	
	//if (hours==0) hours=12;

	if (minutes<=9) minutes="0"+minutes;
	if (seconds<=9) seconds="0"+seconds;
   
	
	var cdate	=	hours+":"+minutes+":"+seconds		//+" "+dn;
	// ********************************************************************//
	var untilday;
	
	// Comparación para ver si es cambio de dia

		//alert("com3:    " + cdate)
		if (hours<=hourDay)
		{
			if (hours<hourDay){
				switch_style('night');return false;
			}else {
				if (minutes<=MinuteDay)
				{	
					if (minutes<MinuteDay) {
						switch_style('night');return false;
					}else{
						if (seconds<=SecondDay)				
						{
							//alert("com1:    " + cdate)
							switch_style('night');return false;		
						}	
					}		
				}
			}
		}

		if (hours>=hourNight)
		{
			if (hours>hourNight){
				switch_style('night');return false;	
			}else {
				if (minutes>=MinuteNight)
				{
					if (minutes>MinuteNight){
						switch_style('night');return false;	
					}else{
						if (seconds>=SecondNight){
							//alert("com2:    " + cdate)
							switch_style('night');return false;			
						}							
					}							
				}							
			}
		}



		if (hours>=hourDay && hours<=hourNight)
		{
			if (hours>hourDay && hours<hourNight){
				switch_style('day');return false;	
			}else {
				if (minutes>=MinuteDay || minutes<=MinuteNight)
				{
					if (minutes>MinuteDay || minutes<MinuteNight){
						switch_style('day');return false;	
					}else {
						if (seconds>=SecondDay || seconds<=SecondNight){
							switch_style('day');return false;			
						}
					}
				}
			}
		}

	/******************************************/
	
}

if (!document.all&&!document.getElementById) getthedate();

function goforit(){
	if (document.all||document.getElementById) setInterval("getthedate()",60000);
}
//window.onload=goforit;
goforit();