function changestate(element) {
  var layer = document.getElementById(element);
  var attribute = layer.style.display;

     if (attribute == 'none') {
        layer.style.display = 'block';
     } else {
        layer.style.display = 'none';
     }
}

function hide(element) {
  var layer = document.getElementById(element);
  var attribute = layer.style.display;

     if (attribute == 'none') {
        layer.style.display = 'none';
     } else {
        layer.style.display = 'none';
     }
}

function show(element) {
  var layer = document.getElementById(element);
  var attribute = layer.style.display;

     if (attribute == 'none') {
        layer.style.display = 'block';
     } else {
        layer.style.display = 'block';
     }
}

function change_news(element) {
  var layer = document.getElementById(element);
  var attribute = layer.style.display;

     if (attribute == 'none') {
        layer.style.display = 'block';
	 document.getElementById(element+'_text').innerHTML = 'Alternativ (Göm)';
     } else {
        layer.style.display = 'none';
	document.getElementById(element+'_text').innerHTML = 'Alternativ (Visa)';
     }

}

function enableField() {
	document.previewform.event_imageurl.disabled=false;
	var mytext = document.getElementById("event_imageurl");
	mytext.focus();
}

function disableField() {
	document.previewform.event_imageurl.disabled=true;
}