function OpenConcert1(){
    window.location.href = "content_summary.aspx?content_summary_id=b715957c-b547-4ae4-bd41-4189ee822c04";
}
function OpenConcert2(){
    window.location.href = "content_summary.aspx?content_summary_id=b715957c-b547-4ae4-bd41-4189ee822c04";
}