function showaccommodation(imgRoom, room)
{
    //get href of passed link - which should point to an image
    var source = imgRoom.getAttribute("href");
    //get image to replace
    var placeholder = document.getElementById('accommodationpic');
    //set image source
    placeholder.setAttribute("src",source);
    //now change text
    var d = document.getElementById(room + "_content");
    placeholder = document.getElementById("specificaccommodation");
    placeholder.innerHTML = d.innerHTML;
}