var playerId = "PlayerMedia";

function initPlayer(id, thumb, file) {
    jwplayer('mediaplayer').setup({
        'id': id,
        'width': '609',
        'height': '387',
        'file': file,
        'image': thumb,
        'modes': [
           { type: 'flash', src: '../mediaplayer/player.swf' }
        ]
    });

}

function Play(thumb, file) {
    initPlayer(playerId, thumb, file);
}
function Play(id, thumb, file) {
    initPlayer(playerId, thumb, file);
}
function CheckOption(item) {
    var option = $(item);
    return false;
}