var startvideo = 0;
var closevideo = 0;

function show_wvideo() {
  elem = document.getElementById('welcomevideo');
  if (parseInt(elem.offsetTop) < 0) {
    elem.style.marginTop = parseInt(elem.style.marginTop) + 5 +"px";
    setTimeout(show_wvideo,2);
  } else {
      //setTimeout(play_video,20);
      //document.getElementById('player').sendEvent('PLAY');
      //document.getElementById('player').sendEvent('PLAY');
  }  
}

function play_video() {
  document.getElementById('player').sendEvent('PLAY');
}

function hide_wvideo() {
  elem = document.getElementById('welcomevideo');
  if (parseInt(elem.offsetTop) > -325) {
    elem.style.marginTop = parseInt(elem.style.marginTop) -5 +"px";
    setTimeout(hide_wvideo,2);
  } 
}
function wvideo() {
  if (!startvideo && !closevideo) {
    document.getElementById('player').sendEvent('PLAY');
    document.getElementById('welcomevideo').style.marginTop = document.getElementById('welcomevideo').offsetTop + "px";
    show_wvideo();
    
    startvideo = 1;
  } else {
    closevideo = 0;
  }
}

function closewvideo() {
  hide_wvideo();
  document.getElementById('player').sendEvent('STOP');
  startvideo = 0;
  closevideo = 1;
}