if (!preloadFlag){
  function newImage(arg) {
    if (document.images) {
      rslt = new Image();
      rslt.src = arg;
      return rslt;
    }
  }

  function changeImages() {
    if (document.images && (preloadFlag == true)) {
      for (var i=0; i<changeImages.arguments.length; i+=2) {
        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
      }
    }
  }

  var preloadFlag = false;
  function preloadImages() {
    if (document.images) {
      navbox_01_navbox_02_over = newImage("{$smarty.const.THEME_RELATIVE}/images/navbox_01-navbox_02_over.gif");
      navbox_02_over = newImage("{$smarty.const.THEME_RELATIVE}/images/navbox_02-over.gif");
      preloadFlag = true;
    }
  }
  preloadImages();
}
 function toggle_layer(layer_ID,aufrufer){
 	if (aufrufer != ''){
		if (document.getElementById(aufrufer).value == ''){
			document.getElementById(layer_ID).style.display = 'block';
			document.getElementById(aufrufer).value = '1';
			}
		else {
			document.getElementById(layer_ID).style.display = 'none';
			document.getElementById(aufrufer).value = '';
		}
 	} else {
		if (document.getElementById(layer_ID).style.display == 'none'){
			document.getElementById(layer_ID).style.display = 'block';
			}
		else {
			document.getElementById(layer_ID).style.display = 'none';
		}
 	}
	//return true;
 	//alert(document.getElementById(layer_ID).style.display)
  }