function sidebarOpen() {
document.getElementById("sidebar").style.width = "50%";
document.getElementById("sidebar_open_short").style.display = "none";
document.getElementById("sidebar_close_short").style.display = "block";
}
function sidebarClose() {
document.getElementById("sidebar").style.width = "0%"
document.getElementById("sidebar_open_short").style.display = "block";
document.getElementById("sidebar_close_short").style.display = "none";