function show(image){
 if(image){
 container = document.getElementById('img');
 container.innerHTML = "<img alt='Vorschaubild' src='uploads/media/" + image +  "'/>";
 container.style.zIndex = "5";
 }
}

function hide() {
 container = document.getElementById('img');
 container.innerHTML = "";
 container.style.zIndex = "-1";
}