function zeige_video(id,videourl){
    //es muss der video_div_container sein!
document.getElementById(id).style.display = 'block';

  var e_w = document.getElementById(id).clientWidth;
  var e_h = document.getElementById(id).clientHeight;

  document.getElementById(id).style.left = (screen.width/2)-(e_w/2);
  document.getElementById(id).style.top = (screen.height/2)-(e_h/2)-125+document.body.scrollTop;
//
//document.getElementById('video_bild').style.display = 'none';
//hier wird der video div ersetzt
jwplayer("video_div").setup({
flashplayer: "/fileadmin/mediaplayer/player.swf",
file: videourl,
height: 335,
width: 550,
events: {
onComplete: function(event) {
verberge_video(id);
}
}
});
jwplayer("video_div").play();
}

function set_mouse(id){
document.getElementById(id).style.cursor = 'pointer';
}

function verberge_video(id){
jwplayer("video_div").stop();
document.getElementById(id).style.display = 'none';
//document.getElementById('video_bild').style.display = 'block';
//document.getElementById('video_wrapper').style.display = 'none';
}