URL_IMG = 'http://www.vvstanna.nl/beheer/images/';
		
// checks for empty values
  function checkValue(value){
    return (value.trim().length == 0);
  }

  function submitNewsForm(form) {
    var result = true;
    with (form)
    {
      if (!checkValue(img.value))
        result = false;
      if (categorie.value == 0)
        result = false;
      if (!checkValue(titel.value))
        result = false;
      if (!checkValue(inleiding.value))
        result = false;
      if (!checkValue(text.value))
        result = false;
    }
    if (!result)
      alert("U heeft het formulier niet volledig ingevuld");
    return result;
  }

  function changeCommissieDivs(divName) {
    $each($$('div'), function(div) {
      if (div.id.substr(0, 4) == 'lid_') {
        div.setStyle('display', 'none');
      }
    });
    var div = $('lid_'+divName);
    div.setStyle('display', 'block');
  }

  function changeTeamDiv(divName) {
    $each($$('div'), function(div) {
      if (div.id.substr(0, 4) == 'team') {
        div.setStyle('display', 'none');
      }
    });
    var div = $('team'+divName);
    div.setStyle('display', 'block');
  }

  
	function cycleHeader(x) {
		pics = $('headerImage-new').getElements('img');
		if (pics.length <= 1) {
			pics[0].fade('in');
			return false;
		}
		pics[(x-1) % pics.length].fade('out');
		pics[x % pics.length].fade('in');
		(function(){ cycleHeader(x+1); }).delay(7500);
	}
	
	function cycleCosponsors(x) {
		pics = $('co-sponsors').getElements('a');
		if (pics.length <= 1) {
			pics[0].fade('in');
			return false;
		}
		pics[(x-1) % pics.length].fade('out');
		pics[x % pics.length].fade('in');
		(function(){ cycleCosponsors(x+1); }).delay(3000);
	}	
	
	function cycleJeugdsponsors(x) {
		pics = $('jeugdsponsorgroep').getElements('a');
		if (pics.length <= 1) {
			pics[0].fade('in');
			return false;
		}
		pics[(x-1) % pics.length].fade('out');
		pics[x % pics.length].fade('in');
		(function(){ cycleJeugdsponsors(x+1); }).delay(3000);
	}	
	
	window.addEvent('domready', function() {
		$each($$('input.date'), function(input) {
			new DateField(input);
		});
		
		$each($$('.hide'), function(elem) {
			elem.fade('hide');
			elem.removeClass('hide');
		});

		if ($('headerImage-new')) {
			cycleHeader(1);
		}
		
		if ($('co-sponsors')) {
			cycleCosponsors(1);
		}
		
		if ($('jeugdsponsorgroep')) {
			cycleJeugdsponsors(1);
		}
	});