new Ajax.Request('http://www.betten-stumpf.de/skin/frontend/default/bsNEW/helper/getBlogItems.php', {
  method:'get',
  requestHeaders: {Accept: 'application/json'},
  onSuccess: function(transport){  
    var json = transport.responseText.evalJSON(true);
    for (var i = 0; i < json.length; i++) { 
        var blogdata = json[i]; 
       
        var item = '<div class="date">' + blogdata.datum + '</div>';
        item = item + '<a href="' + blogdata.origLink + '" target="_blank">';

        item = item + blogdata.title + '</a>';
        
        items = new Element('li').update(item);
        $('blog_items').insert(items); 
    }
  },
  onFailure: function(){ alert('Something went wrong...') }
});