// JavaScript Document
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function OpenPopup(sPicURL)
{    window.open("http://www.siteaanpassen.nl/popup.php?"+sPicURL, "Vergroting", "resizable=0,HEIGHT=220,WIDTH=220");
} 
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}


function HideSubmenu()
{
	if( document.getElementById('submenu') ) 
	{
		document.getElementById('submenu').style.display = 'none';
	}
}


function number_of_days( month, year ) {
	days = 31;
	if (( month == 4 )||( month == 6 )||( month == 9 )||( month == 11 )) {
		days = 30;
	} else if ( month == 2 ) {
		if (((( year % 100 ) == 0 ) && (( year % 400 ) == 0 )) || ((( year % 100 )!=0 ) && (( year % 4 ) == 0 ))) {
			days = 29;
		} else {
			days = 28;
		}
	}
	return days;
}

function day_selected(month,year,combo, day){
    var i=number_of_days(month,year);
    combo.length=null;
    if(day==null){
        day=0;
    }
    for (j=0;j<i;j++){
        if((j+1)<10){
            var h="0"+(j+1);
        }else{
            var h=(j+1);
        }
        var p=new Option(h,h,"","");
        combo[j]=p;
    }
    if(day!=0){
        combo.selectedIndex=(day-1);
    }
}

function update_date(di,mi,ai,numNights){
    
    if(di==null){
        di=parseInt(document.reservations.arrivald.value,10);
        mi=parseInt(document.reservations.arrivalm.value,10);
        ai=parseInt(document.reservations.arrivaly.value,10);
        numNights=parseInt(document.reservations.nights.value);
        //alert(di+"/"+mi+"/"+ai);
    }
    if(document.reservations.nights.value!=""){
        var numdays=number_of_days(mi,ai);

        if((di+numNights)<=numdays){
            if((di+numNights)<10){
                var texto="0"+(di+numNights);
            }else{
                var texto=(di+numNights);
            }
            if(mi<10){
                var texto1="0"+mi;
            }else{
                var texto1=mi;
            }
            
            //day_selected(mi,ai,document.reservations.ArrivalDay);
            //document.reservations.ArrivalDay.value=texto;
            //document.reservations.arrivalm.value=texto1;
            //document.reservations.ArrivalYear.value=ai;
            return 1;
        }else{
            
            if((mi+1)>=13){
                
                update_date(1,1,ai+1,(numNights-(numdays-di+1)));
            }else{
                
                update_date(1,mi+1,ai,(numNights-(numdays-di+1)));
            }
        }
    }
}