function Videos (){
var self=this;
this.init=
function () {
Event.observe( $('btn_video1')
, 'click'
, function (e){
$('video').innerHTML='';
Event.stop(e);
}
);
Event.observe( $('btn_video2')
, 'click'
, function (e){
$('video').innerHTML='';
Event.stop(e);
}
);
}
}