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 MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function confirmWeergeven() {
	if (document.form1.weergeven[0].checked == true) {
		if (confirm('Als u dit artikel wilt weergeven, zullen eventuele andere artikelen op NIET weergeven gezet.\n\nWilt u doorgaan?')) {
		} else {
			document.form1.weergeven[1].checked = true;
		}
	} else {
		alert('Vergeet niet een ander artikel voor weergave te selecteren.')
	}
}

function imagePreview(dir, member) {
	var image = dir + '/' + member + '/' + document.form1.afbeelding.options[document.form1.afbeelding.options.selectedIndex].value;
	var img = new Image();
	img.src = '../../images/upload/'+image;	
	NewWindow('../afbeelding/popup.php?afbeelding='+image, 'popup', img.width, img.height, '0');
	
}

function NewWindow(mypage,myname,w,h,scrol) {
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0; TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	win = window.open(mypage,myname,"height="+h+",width="+w+",top="+TopPosition+",left="+LeftPosition+",scrollbars="+scrol+",status=0,"); win.focus();
}

function changeBG(objRow, mouseState) {
    if (mouseState == 'on') {objRow.style.color = "#FF0000"; }
    else if (mouseState == 'off') {objRow.style.color = "#000000"; }
}

function textCounter(field,cntfield,maxlimit) {
	if (field.value.length > maxlimit) // if too long...trim it!
	field.value = field.value.substring(0, maxlimit); else cntfield.value = maxlimit - field.value.length;
}

function selectEind(waarde) {
	if (waarde == 'onbeperkt') {document.form1.eind.disabled = true;document.form1.eind.value = '';
	} else {document.form1.eind.disabled = false;}	
}

var NUM_CENTYEAR = 30;
var BUL_TIMECOMPONENT = false;
var BUL_YEARSCROLL = true;

var calendars = [];
var RE_NUM = /^\-?\d+$/;

function calendar1(obj_target) {
	this.gen_date = cal_gen_date1;
	this.gen_time = cal_gen_time1;
	this.gen_tsmp = cal_gen_tsmp1;
	this.prs_date = cal_prs_date1;
	this.prs_time = cal_prs_time1;
	this.prs_tsmp = cal_prs_tsmp1;
	this.popup    = cal_popup1;
	this.popup2   = cal_popup2;

	if (!obj_target)
		return cal_error("Error calling the calendar: no target control specified");
	if (obj_target.value == null)
		return cal_error("Error calling the calendar: parameter specified is not valid target control");
	this.target = obj_target;
	this.time_comp = BUL_TIMECOMPONENT;
	this.year_scroll = BUL_YEARSCROLL;
	
	this.id = calendars.length;
	calendars[this.id] = this;
}

function cal_popup1 (str_datetime) {
	this.dt_current = this.prs_tsmp(str_datetime ? str_datetime : this.target.value);
	if (!this.dt_current) return;
	
	LeftPosition = (screen.width) ? (screen.width-200)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-(this.time_comp ? 255 : 230))/2 : 0;
	
	var obj_calwindow = window.open(
		'../../inc/kalender.html?datetime=' + this.dt_current.valueOf()+ '&id=' + this.id,
		'Calendar', 'width=200,height='+(this.time_comp ? 255 : 230)+
		',status=no,resizable=no,top='+TopPosition+',left='+LeftPosition+',dependent=yes,alwaysRaised=yes'
	);
	obj_calwindow.opener = window;
	obj_calwindow.focus();
}

function cal_popup2 (str_datetime) {
	this.dt_current = this.prs_tsmp(str_datetime ? str_datetime : this.target.value);
	if (!this.dt_current) return;
	
	LeftPosition = (screen.width) ? (screen.width-200)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-(this.time_comp ? 235 : 210))/2 : 0;
	
	var obj_calwindow = window.open(
		'kalender.html?datetime=' + this.dt_current.valueOf()+ '&id=' + this.id,
		'Calendar', 'width=200,height='+(this.time_comp ? 235 : 210)+
		',status=no,resizable=no,top='+TopPosition+',left='+LeftPosition+',dependent=yes,alwaysRaised=yes'
	);
	obj_calwindow.opener = window;
	obj_calwindow.focus();
}

function cal_gen_tsmp1 (dt_datetime) {
	return(this.gen_date(dt_datetime) + ' ' + this.gen_time(dt_datetime));
}

function cal_gen_date1 (dt_datetime) {
	return (
		(dt_datetime.getDate() < 10 ? '0' : '') + dt_datetime.getDate() + "-"
		+ (dt_datetime.getMonth() < 9 ? '0' : '') + (dt_datetime.getMonth() + 1) + "-"
		+ dt_datetime.getFullYear()
	);
}
function cal_gen_time1 (dt_datetime) {
	return (
		(dt_datetime.getHours() < 10 ? '0' : '') + dt_datetime.getHours() + ":"
		+ (dt_datetime.getMinutes() < 10 ? '0' : '') + (dt_datetime.getMinutes()) + ":"
		+ (dt_datetime.getSeconds() < 10 ? '0' : '') + (dt_datetime.getSeconds())
	);
}

function cal_prs_tsmp1 (str_datetime) {
	if (!str_datetime)
		return (new Date());
	if (RE_NUM.exec(str_datetime))
		return new Date(str_datetime);
	var arr_datetime = str_datetime.split(' ');
	return this.prs_time(arr_datetime[1], this.prs_date(arr_datetime[0]));
}

function cal_prs_date1 (str_date) {

	var arr_date = str_date.split('-');

	if (arr_date.length != 3) return cal_error ("Ongeldige datum: '" + str_date + "'.\nGeaccepteerde formaat is: dd-mm-jjjj.");
	if (!arr_date[0]) return cal_error ("Ongeldige datum: '" + str_date + "'.\nEr kan geen dag van de maand gevonden worden.");
	if (!RE_NUM.exec(arr_date[0])) return cal_error ("Ongeldige dag van de maand: '" + arr_date[0] + "'.\nOngeldige waarde.");
	if (!arr_date[1]) return cal_error ("Ongeldige datum: '" + str_date + "'.\nDe maand kan niet gevonden worden.");
	if (!RE_NUM.exec(arr_date[1])) return cal_error ("Ongeldige maand: '" + arr_date[1] + "'.\nOngeldige waarde.");
	if (!arr_date[2]) return cal_error ("Ongeldige datum: '" + str_date + "'.\nHet jaar kan niet gevonden worden.");
	if (!RE_NUM.exec(arr_date[2])) return cal_error ("Ongeldige jaar: '" + arr_date[2] + "'.\nOngeldige waarde.");

	var dt_date = new Date();
	dt_date.setDate(1);

	if (arr_date[1] < 1 || arr_date[1] > 12) return cal_error ("Ongeldige maand: '" + arr_date[1] + "'.\nToegestaande waarde is 01-12.");
	dt_date.setMonth(arr_date[1]-1);
	 
	if (arr_date[2] < 100) arr_date[2] = Number(arr_date[2]) + (arr_date[2] < NUM_CENTYEAR ? 2000 : 1900);
	dt_date.setFullYear(arr_date[2]);

	var dt_numdays = new Date(arr_date[2], arr_date[1], 0);
	dt_date.setDate(arr_date[0]);
	if (dt_date.getMonth() != (arr_date[1]-1)) return cal_error ("Ongeldige dag van de maand: '" + arr_date[0] + "'.\nToegestaande waarde is 01-"+dt_numdays.getDate()+".");

	return (dt_date)
}

function cal_prs_time1 (str_time, dt_date) {

	if (!dt_date) return null;
	var arr_time = String(str_time ? str_time : '').split(':');

	if (!arr_time[0]) dt_date.setHours(0);
	else if (RE_NUM.exec(arr_time[0]))
		if (arr_time[0] < 24) dt_date.setHours(arr_time[0]);
		else return cal_error ("Invalid hours value: '" + arr_time[0] + "'.\nAllowed range is 00-23.");
	else return cal_error ("Invalid hours value: '" + arr_time[0] + "'.\nAllowed values are unsigned integers.");
	
	if (!arr_time[1]) dt_date.setMinutes(0);
	else if (RE_NUM.exec(arr_time[1]))
		if (arr_time[1] < 60) dt_date.setMinutes(arr_time[1]);
		else return cal_error ("Invalid minutes value: '" + arr_time[1] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid minutes value: '" + arr_time[1] + "'.\nAllowed values are unsigned integers.");

	if (!arr_time[2]) dt_date.setSeconds(0);
	else if (RE_NUM.exec(arr_time[2]))
		if (arr_time[2] < 60) dt_date.setSeconds(arr_time[2]);
		else return cal_error ("Invalid seconds value: '" + arr_time[2] + "'.\nAllowed range is 00-59.");
	else return cal_error ("Invalid seconds value: '" + arr_time[2] + "'.\nAllowed values are unsigned integers.");

	dt_date.setMilliseconds(0);
	return dt_date;
}

function cal_error (str_message) {
	alert (str_message);
	return null;
}