function showProjectsInfo() {
  setSidebarText("This is some kind of project part.");
}

function setSidebarText(text) {
  var sidebar = document.getElementById("sidebarText");
  var x = 0.0;
  sidebar.style.opacity="0";
  sidebar.innerHTML = text;
  
  while (x <= 10) {
    setInterval(function() { sidebar.style.opacity=""+x+""; }, "5000");
    //sidebar.style.opacity = x;
    x+=0.5;
  }
}