window.addEvent('domready', function() {
	randomVisual();

	$('searchform').getElements('select[name$=page_id]').addEvent('change', function(e){ 
		url = 'http://www.symbision.nl/';
		if (this.value != '') {
			document.location.href = url + this.value;
		} 
	}); 

	/* clear searchform */
	$('s').addEvent('click', function(e){
		this.value = '';
	});

	/* if subpage is given in querystring */
	if (getVar('sub') > 0) {
		subNavNr = getVar('sub');
		subNavItem = 'item'+subNavNr;
		loadSubPage(subNavItem);
	}  
	
	/* attach subnavigation functions */
	$ES('a','subnavigation').addEvent('click', function(e) {
		if (this.getProperty('name') > 0) {
			new Event(e).stop();
			loadSubPage(this.getProperty('id'));
			visualCounter();
		}	
	}); 


	/* ajax load contents */
	function loadSubPage(item) {
		
		/*get parent if item doesn't exist in tree */
		if (!$(item)) {

			ajaxUrl = 'http://www.symbision.nl/wp-content/themes/symbision/ajax.php?get_parent='+subNavNr;

			new Ajax(ajaxUrl, { 
				method: 'get', 
				onComplete: function(ajaxObj) {
					ajaxRequest(subNavNr);
					swapTree('item'+ajaxObj);
				} 
			}).request();
		 
		} else {
			ajaxRequest($(item).getProperty('name'));
			swapTree(item);
		}
		
	}
	
	/* check for and show/hide submenu */
	function swapTree(treeItem) {
		$$('.menuTitleSub').setStyle('display','none');
		$$('.arrow').setStyle('display','none');
		
		if ((subMenu = $(treeItem).getParent().getNext()) != null ) {
		 	if (subMenu.hasClass('menuTitleSub') && subMenu.innerHTML != '') {
		 		subMenu.setStyle('display','block');
		 	}
		}
		
		$(treeItem).getParent().setStyle('display','block');
		$(treeItem).getParent().getParent().getFirst().setStyle('display','block');
	}
	
});

var visCount = 0;
function visualCounter() {
	if  (visCount == 2) {
		randomVisual();
		visCount = 0;
	} else {
		visCount++;
	}
}

function randomVisual() {
	var rnd = Math.floor(Math.random() * visuals.length);

	$('quote').setHTML(visuals[rnd].slogan);
	$('quoteFunc').setHTML(visuals[rnd].ondertitel);
	$('quoteRef').setHTML(visuals[rnd].titel);

	$('visual').empty();
	var myImg = new Element('img', {
		src: visuals[rnd].foto
	}).inject('visual', 'top');
}

function ajaxRequest(pageName,refer) {
		
		ajaxUrl = 'http://www.symbision.nl/wp-content/themes/symbision/ajax.php?page_id='+pageName;
		if (refer) ajaxUrl = ajaxUrl + '&referrer='+refer;
		
		new Ajax(ajaxUrl, { 
			method: 'get', 
			update: $('mainContent') 
		}).request();
	}

/* get value from querystring */
function getVar(variable) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  } 
  return 0;
}