function makeGalerieClickable() {
 // gibt es überhaupt eine ?
 if(!document.getElementById('thumbnails')) { return ; }
 container = document.getElementById('thumbnails');
 myimages = container.getElementsByTagName('img');
 mylength = myimages.length;
 for(i=0;i<myimages.length;i++) {
	 myimages[i].onclick = function() {
	 caption = this.alt;
   imagecontainer = document.getElementById('grossesbild');
	 imagecontainer.innerHTML = '<img src="' + this.src.replace('.jpg','_big.jpg') + '" alt="' + this.alt + '" />';
	 captioncontainer = document.getElementById('galerie_caption');
	 captioncontainer.innerHTML = caption;
	 writeNavi(this.id);
	}
 }
}

var element_id;
function galerie_click(element_id) {
   if(!document.getElementById(element_id)) { return; }
   curr_image = document.getElementById(element_id);
	 caption = curr_image.alt;
   imagecontainer = document.getElementById('grossesbild');
	 imagecontainer.innerHTML = '<img src="' + curr_image.src.replace('.jpg','_big.jpg') + '" alt="' + curr_image.alt + '" />';
	 captioncontainer = document.getElementById('galerie_caption');
	 captioncontainer.innerHTML = caption;
	 writeNavi(curr_image.id);
}

function writeNavi(myid) {
 var prev = '<img alt="" src="/_globalimages/galerie_img_prev.gif">';
 var next = '<img alt="" src="/_globalimages/galerie_img_next.gif">';
 current = parseInt(myid.replace('bild',''));
 if(current > 1) {
  prev = '<a href="javascript:galerie_click(\'' + ("bild" + (current-1)) + '\')"><img alt="" src="/_globalimages/galerie_img_prev.gif"></a>';
 }
 if(current < 16) {
  next = '&nbsp;<a href="javascript:galerie_click(\'' + ("bild" + (current+1)) + '\')"><img alt="" src="/_globalimages/galerie_img_next.gif"></a>';
 }
 document.getElementById('galerie_imagenav').innerHTML = prev+next;
}

function init() {
 makeGalerieClickable();
 galerie_click('bild1');
 hlNavBlock();
 adjustAdressblockPosition();
}

window.onload = init;