function centerWindow(element) {
     if($(element) != null) {

               $(element).style.top = 
                    Math.round(document.viewport.getScrollOffsets().top + 
                    (( document.viewport.getHeight() - $(element).getHeight()))/2)+'px';
               $(element).style.left = 
                    Math.round(document.viewport.getScrollOffsets().left + 
                    (( document.viewport.getWidth() - $(element).getWidth()))/2)+'px';

     }
}



var Lightbox = Class.create({
	
    initialize : function(containerDiv) {
		this.container = containerDiv;
		this._hideLayer(this.container);
		this.flash = false;
		
		
	},
	_hideLayer : function hideLayer(userAction){
		$(userAction).style.display="none";
	},
	_makeVisible : function makeVisible(){

		if ($('shade')) {
			
			vHeight = document.viewport.getScrollOffsets().top + document.viewport.getHeight();
			
			$('shade').style.top = document.viewport.getScrollOffsets().top + 'px';
			$('shade').style.left = document.viewport.getScrollOffsets().left + 'px';
			
			
			
			Event.observe('shade', 'click', this.close.bindAsEventListener(this) );
			Event.observe(window, 'scroll', this.scroll.bindAsEventListener(this) );
			
			//Event.observe( this.container , 'click', this.close.bindAsEventListener(this) );
		}

	},
	_makeInvisible : function makeInvisible(){
		

	},
	_showLayer : function showLayer(userAction){
		
		$(userAction).style.display="block";
		centerWindow(userAction);
		
		if (this.flash) this.flashOpen();
		
	},
	_hideLayer : function hideLayer(userAction){
		$(userAction).style.display="none";
		
		if (this.flash) this.flashClose();
	},	
	_fade : function fadeBg(userAction,whichDiv){
		if(userAction=='close'){
			new Effect.Fade('shade',
					   {duration:.5,
					    from:0.5,
					    to:0,
					    afterFinish:this._makeInvisible(),
					    afterUpdate:this._hideLayer(whichDiv)});
		} else {
			
			new Effect.Appear('shade',
					   {duration:.5,
					    from:0,
					    to:0.5,
					    beforeUpdate:this._makeVisible(),
					    afterFinish:this._showLayer(whichDiv)});
		}
	},	
	open : function () {
		this._fade('open', this.container);
	},	
	close : function () {
		this._fade('close', this.container);
	},
	scroll : function () {
		
		if ( $('shade') ) {	
			vHeight = document.viewport.getScrollOffsets().top + document.viewport.getHeight();
			$('shade').style.top = document.viewport.getScrollOffsets().top + 'px';
			centerWindow(this.container);
		}
		
	},
	setFlash : function ( movie, width, height ) {
		this.flash = true;
		this.flash_movie = movie;
		this.flash_width = width;
		this.flash_height = height;
	},
	flashOpen : function () {

		swfobject.embedSWF( this.flash_movie , "movieholder", this.flash_width, this.flash_height, "9.0.0", "/flash/expressInstall.swf");
	},
	flashClose : function () {

		swfobject.removeSWF('movieholder');
		$('movie').innerHTML = '<div id="movieholder"><h1>Deze film werkt niet zonder JavaScript &amp; Flash</h1><p><a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /></a></p></div>';
	}

	
});




function printemail(u,d) {
 document.write("<a href='mailto:"+u+"@"+d+"'>"+u+"@"+d+"</a>");
} 



function processReqChange() {
	
    // only if req shows "loaded"
    if (xmlhttp.readyState == 4) {
    	alert("Test");
        // only if "OK"
        if (xmlhttp.status == 200) {
        	alert(xmlhttp.responseText);
        } else {
            alert("There was a problem retrieving the XML data:\n" + xmlhttp.statusText);
        }
    }
}

function mailinglistsubscribe() {

	oName = document.getElementById("name");	
	oEmail = document.getElementById("email");
	var filter=/^.+@.+\..+$/
	
	if (oName.value=="") {
		obj=document.getElementById("lname");
		obj.style.color="red";
		alert("Ongeldige naam.");
		return false;
	} else if (!filter.test(oEmail.value)) {
		obj=document.getElementById("lemail");
		obj.style.color="red";
		alert("Ongeldig e-mail adres.");
		return false;
	} else {
		var xmlhttp=false;
		/*@cc_on @*/
		/*@if (@_jscript_version >= 5)
		// JScript gives us Conditional compilation, we can cope with old IE versions.
		// and security blocked creation of the objects.
		 try {
		  xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		 } catch (e) {
		  try {
		   xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		  } catch (E) {
		   xmlhttp = false;
		  }
		 }
		@end @*/
		if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		  xmlhttp = new XMLHttpRequest();
		}
		
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState==4 && xmlhttp.status == 200) {   	
				obj = document.getElementById("mailinglistbusy");
				obj.style.display="none";
				obj = document.getElementById("mailinglistresponse");
				obj.style.display="block";
			}
		}
		
		varemail = urlencode(oEmail.value);
		varname = urlencode(oName.value);
		
		xmlhttp.open("GET", "/dp.php?action=subscribe&email=" + varemail + "&name=" + varname, true);
		xmlhttp.send("");
	
		obj = document.getElementById("mailinglistrequest");
		obj.style.display="none";
		obj = document.getElementById("mailinglistbusy");
		obj.style.display="block";
			
		return false;
	}
}


function validateform() {


	RequiredFields = new Array(5);
	RequiredFields[0] = "achternaam";
	RequiredFields[1] = "email";
	RequiredFields[2] = "adres";
	RequiredFields[3] = "postcode";
	RequiredFields[4] = "woonplaats";

	var FormPass=true;

	 for (var i=0; i < RequiredFields.length; i++ ) {
		
		FieldName = RequiredFields[i];
		objField=document.getElementById("f_" + FieldName);

		if (objField.value != "" && objField.value != " ") {
			objLabel=document.getElementById("l_" + FieldName);
			objLabel.style.color="black";
		} else {
			objLabel=document.getElementById("l_" + FieldName);
			objLabel.style.color="red";
			FormPass=false;

		}
	 }

	if(!document.getElementById("geslachtman").checked && !document.getElementById("geslachtvrouw").checked) {
			objLabel=document.getElementById("l_geslacht");
			objLabel.style.color="red";
			FormPass=false;
	} else {
			objLabel=document.getElementById("l_geslacht");
			objLabel.style.color="black";
	}


	if (!FormPass) {
		alert("Niet alle vereiste velden zijn ingevuld.");
		return false;
	} else {
		return true;
	}

}




function photogallery() {


	URL = "/index.php?p=gallery&galleryid=1"

	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=660,height=500');");



}


function photogalleryfoto(galleryid, entryid) {


	URL = "/index.php?p=gallery&galleryid=" + galleryid + "&entryid=" + entryid

	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=660,height=500');");



}



function urlencode(text3s) 
{ 
// The Javascript escape and unescape functions do not correspond 
// with what browsers actually do... 
var SAFECHARS = "0123456789" + // Numeric 
"ABCDEFGHIJKLMNOPQRSTUVWXYZ" + // Alphabetic 
"abcdefghijklmnopqrstuvwxyz" + 
"-_.!~*'()"; // RFC2396 Mark characters 
var HEX = "0123456789ABCDEF"; 
var plaintext = text3s; 
var encoded = ""; 
for (var i = 0; i < plaintext.length; i++ ) { 
var ch = plaintext.charAt(i); 
if (ch == " ") { 
encoded += "+"; // x-www-urlencoded, rather than %20 
} else if (SAFECHARS.indexOf(ch)!= -1) { 
encoded += ch; 
} else { 
var charCode = ch.charCodeAt(0); 
if (charCode > 255) { 
alert( "Unicode Character '" 
+ ch 
+ "' cannot be encoded using standard URL encoding.\n" + 
"(URL encoding only supports 8-bit characters.)\n" + 
"A space (+) will be substituted." ); 
encoded += "+"; 
} else { 
encoded += "%"; 
encoded += HEX.charAt((charCode >> 4) & 0xF); 
encoded += HEX.charAt(charCode & 0xF); 
} 
} 
} // for 
return encoded; 
}; 


//*****************************************************************************
// Do not remove this notice.
//
// Copyright 2000-2004 by Mike Hall.
// See http://www.brainjar.com for terms of use.
//*****************************************************************************

//----------------------------------------------------------------------------
// Code to determine the browser and version.
//----------------------------------------------------------------------------

function Browser() {

  var ua, s, i;

  this.isIE    = false;  // Internet Explorer
  this.isOP    = false;  // Opera
  this.isNS    = false;  // Netscape
  this.version = null;

  ua = navigator.userAgent;

  s = "Opera";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isOP = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as Netscape 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }

  s = "MSIE";
  if ((i = ua.indexOf(s))) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }
}

var browser = new Browser();

//----------------------------------------------------------------------------
// Code for handling the menu bar and active button.
//----------------------------------------------------------------------------

var activeButton = null;

/* [MODIFIED] This code commented out, not needed for activate/deactivate
   on mouseover.

// Capture mouse clicks on the page so any active button can be
// deactivated.

if (browser.isIE)
  document.onmousedown = pageMousedown;
else
  document.addEventListener("mousedown", pageMousedown, true);

function pageMousedown(event) {

  var el;

  // If there is no active button, exit.

  if (activeButton == null)
    return;

  // Find the element that was clicked on.

  if (browser.isIE)
    el = window.event.srcElement;
  else
    el = (event.target.tagName ? event.target : event.target.parentNode);

  // If the active button was clicked on, exit.

  if (el == activeButton)
    return;

  // If the element is not part of a menu, reset and clear the active
  // button.

  if (getContainerWith(el, "DIV", "menu") == null) {
    resetButton(activeButton);
    activeButton = null;
  }
}

[END MODIFIED] */

function buttonClick(event, menuId) {

  var button;

  // Get the target button element.

  if (browser.isIE)
    button = window.event.srcElement;
  else
    button = event.currentTarget;

  // Blur focus from the link to remove that annoying outline.

  button.blur();

  // Associate the named menu to this button if not already done.
  // Additionally, initialize menu display.

  if (button.menu == null) {
    button.menu = document.getElementById(menuId);
    if (button.menu.isInitialized == null)
      menuInit(button.menu);
  }

  // [MODIFIED] Added for activate/deactivate on mouseover.

  // Set mouseout event handler for the button, if not already done.

  if (button.onmouseout == null)
    button.onmouseout = buttonOrMenuMouseout;

  // Exit if this button is the currently active one.

  if (button == activeButton)
    return false;

  // [END MODIFIED]

  // Reset the currently active button, if any.

  if (activeButton != null)
    resetButton(activeButton);

  // Activate this button, unless it was the currently active one.

  if (button != activeButton) {
    depressButton(button);
    activeButton = button;
  }
  else
    activeButton = null;

  return false;
}

function buttonMouseover(event, menuId) {

  var button;

  // [MODIFIED] Added for activate/deactivate on mouseover.

  // Activates this button's menu if no other is currently active.

  if (activeButton == null) {
    buttonClick(event, menuId);
    return;
  }

  // [END MODIFIED]

  // Find the target button element.

  if (browser.isIE)
    button = window.event.srcElement;
  else
    button = event.currentTarget;

  // If any other button menu is active, make this one active instead.

  if (activeButton != null && activeButton != button)
    buttonClick(event, menuId);
}

function depressButton(button) {

  var x, y;

  // Update the button's style class to make it look like it's
  // depressed.

  button.className += " menuButtonActive";

  // [MODIFIED] Added for activate/deactivate on mouseover.

  // Set mouseout event handler for the button, if not already done.

  if (button.onmouseout == null)
    button.onmouseout = buttonOrMenuMouseout;
  if (button.menu.onmouseout == null)
    button.menu.onmouseout = buttonOrMenuMouseout;

  // [END MODIFIED]

  // Position the associated drop down menu under the button and
  // show it.

  x = getPageOffsetLeft(button);
  y = getPageOffsetTop(button) + button.offsetHeight;

  // For IE, adjust position.

  if (browser.isIE) {
    x += button.offsetParent.clientLeft;
    y += button.offsetParent.clientTop;
  }

  button.menu.style.left = x + "px";
  button.menu.style.top  = y + "px";
  button.menu.style.visibility = "visible";
}

function resetButton(button) {

  // Restore the button's style class.

  removeClassName(button, "menuButtonActive");

  // Hide the button's menu, first closing any sub menus.

  if (button.menu != null) {
    closeSubMenu(button.menu);
    button.menu.style.visibility = "hidden";
  }
}

//----------------------------------------------------------------------------
// Code to handle the menus and sub menus.
//----------------------------------------------------------------------------

function menuMouseover(event) {

  var menu;

  // Find the target menu element.

  if (browser.isIE)
    menu = getContainerWith(window.event.srcElement, "DIV", "menu");
  else
    menu = event.currentTarget;

  // Close any active sub menu.

  if (menu.activeItem != null)
    closeSubMenu(menu);
}

function menuItemMouseover(event, menuId) {

  var item, menu, x, y;

  // Find the target item element and its parent menu element.

  if (browser.isIE)
    item = getContainerWith(window.event.srcElement, "A", "menuItem");
  else
    item = event.currentTarget;
  menu = getContainerWith(item, "DIV", "menu");

  // Close any active sub menu and mark this one as active.

  if (menu.activeItem != null)
    closeSubMenu(menu);
  menu.activeItem = item;

  // Highlight the item element.

  item.className += " menuItemHighlight";

  // Initialize the sub menu, if not already done.

  if (item.subMenu == null) {
    item.subMenu = document.getElementById(menuId);
    if (item.subMenu.isInitialized == null)
      menuInit(item.subMenu);
  }

  // [MODIFIED] Added for activate/deactivate on mouseover.

  // Set mouseout event handler for the sub menu, if not already done.

  if (item.subMenu.onmouseout == null)
    item.subMenu.onmouseout = buttonOrMenuMouseout;

  // [END MODIFIED]

  // Get position for submenu based on the menu item.

  x = getPageOffsetLeft(item) + item.offsetWidth;
  y = getPageOffsetTop(item);

  // Adjust position to fit in view.

  var maxX, maxY;

  if (browser.isIE) {
    maxX = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) +
      (document.documentElement.clientWidth != 0 ? document.documentElement.clientWidth : document.body.clientWidth);
    maxY = Math.max(document.documentElement.scrollTop, document.body.scrollTop) +
      (document.documentElement.clientHeight != 0 ? document.documentElement.clientHeight : document.body.clientHeight);
  }
  if (browser.isOP) {
    maxX = document.documentElement.scrollLeft + window.innerWidth;
    maxY = document.documentElement.scrollTop  + window.innerHeight;
  }
  if (browser.isNS) {
    maxX = window.scrollX + window.innerWidth;
    maxY = window.scrollY + window.innerHeight;
  }
  maxX -= item.subMenu.offsetWidth;
  maxY -= item.subMenu.offsetHeight;

  if (x > maxX)
    x = Math.max(0, x - item.offsetWidth - item.subMenu.offsetWidth
      + (menu.offsetWidth - item.offsetWidth));
  y = Math.max(0, Math.min(y, maxY));

  // Position and show the sub menu.

  item.subMenu.style.left = x + "px";
  item.subMenu.style.top  = y + "px";
  item.subMenu.style.visibility = "visible";

  // Stop the event from bubbling.

  if (browser.isIE)
    window.event.cancelBubble = true;
  else
    event.stopPropagation();
}

function closeSubMenu(menu) {

  if (menu == null || menu.activeItem == null)
    return;

  // Recursively close any sub menus.

  if (menu.activeItem.subMenu != null) {
    closeSubMenu(menu.activeItem.subMenu);
    menu.activeItem.subMenu.style.visibility = "hidden";
    menu.activeItem.subMenu = null;
  }
  removeClassName(menu.activeItem, "menuItemHighlight");
  menu.activeItem = null;
}

// [MODIFIED] Added for activate/deactivate on mouseover. Handler for mouseout
// event on buttons and menus.

function buttonOrMenuMouseout(event) {

  var el;

  // If there is no active button, exit.

  if (activeButton == null)
    return;

  // Find the element the mouse is moving to.

  if (browser.isIE)
    el = window.event.toElement;
  else if (event.relatedTarget != null)
      el = (event.relatedTarget.tagName ? event.relatedTarget : event.relatedTarget.parentNode);

  // If the element is not part of a menu, reset the active button.

  if (getContainerWith(el, "DIV", "menu") == null) {
    resetButton(activeButton);
    activeButton = null;
  }
}

// [END MODIFIED]

//----------------------------------------------------------------------------
// Code to initialize menus.
//----------------------------------------------------------------------------

function menuInit(menu) {

  var itemList, spanList;
  var textEl, arrowEl;
  var itemWidth;
  var w, dw;
  var i, j;

  // For IE, replace arrow characters.

  if (browser.isIE) {
    menu.style.lineHeight = "2.5ex";
    spanList = menu.getElementsByTagName("SPAN");
    for (i = 0; i < spanList.length; i++)
      if (hasClassName(spanList[i], "menuItemArrow")) {
        spanList[i].style.fontFamily = "Webdings";
        spanList[i].firstChild.nodeValue = "4";
      }
  }

  // Find the width of a menu item.

  itemList = menu.getElementsByTagName("A");
  if (itemList.length > 0)
    itemWidth = itemList[0].offsetWidth;
  else
    return;

  // For items with arrows, add padding to item text to make the
  // arrows flush right.

  for (i = 0; i < itemList.length; i++) {
    spanList = itemList[i].getElementsByTagName("SPAN");
    textEl  = null;
    arrowEl = null;
    for (j = 0; j < spanList.length; j++) {
      if (hasClassName(spanList[j], "menuItemText"))
        textEl = spanList[j];
      if (hasClassName(spanList[j], "menuItemArrow"))
        arrowEl = spanList[j];
    }
    if (textEl != null && arrowEl != null) {
      textEl.style.paddingRight = (itemWidth 
        - (textEl.offsetWidth + arrowEl.offsetWidth)) + "px";
      // For Opera, remove the negative right margin to fix a display bug.
      if (browser.isOP)
        arrowEl.style.marginRight = "0px";
    }
  }

  // Fix IE hover problem by setting an explicit width on first item of
  // the menu.

  if (browser.isIE) {
    w = itemList[0].offsetWidth;
    itemList[0].style.width = w + "px";
    dw = itemList[0].offsetWidth - w;
    w -= dw;
    itemList[0].style.width = w + "px";
  }

  // Mark menu as initialized.

  menu.isInitialized = true;
}

//----------------------------------------------------------------------------
// General utility functions.
//----------------------------------------------------------------------------

function getContainerWith(node, tagName, className) {

  // Starting with the given node, find the nearest containing element
  // with the specified tag name and style class.

  while (node != null) {
    if (node.tagName != null && node.tagName == tagName &&
        hasClassName(node, className))
      return node;
    node = node.parentNode;
  }

  return node;
}

function hasClassName(el, name) {

  var i, list;

  // Return true if the given element currently has the given class
  // name.

  list = el.className.split(" ");
  for (i = 0; i < list.length; i++)
    if (list[i] == name)
      return true;

  return false;
}

function removeClassName(el, name) {

  var i, curList, newList;

  if (el.className == null)
    return;

  // Remove the given class name from the element's className property.

  newList = new Array();
  curList = el.className.split(" ");
  for (i = 0; i < curList.length; i++)
    if (curList[i] != name)
      newList.push(curList[i]);
  el.className = newList.join(" ");
}

function getPageOffsetLeft(el) {

  var x;

  // Return the x coordinate of an element relative to the page.

  x = el.offsetLeft;
  if (el.offsetParent != null)
    x += getPageOffsetLeft(el.offsetParent);

  return x;
}

function getPageOffsetTop(el) {

  var y;

  // Return the x coordinate of an element relative to the page.

  y = el.offsetTop;
  if (el.offsetParent != null)
    y += getPageOffsetTop(el.offsetParent);

  return y;
}