var sidebarVisible = true;

function toggleSidebar(isSinglePage){
  
  var sidebar = document.getElementById("sidebar");
  var hiderLink = document.getElementById("sidebartoggler");
  
  if (isSinglePage == true) {
    var commentArea = document.getElementById("comment");
  }
  
  if (sidebarVisible == false) {
    var posts = document.getElementById("singleposts");
  }
  else{
    var posts = document.getElementById("posts");
  }
  
  if (sidebarVisible == false){
    sidebar.style.display = "block";
    posts.id = "posts";
    sidebarVisible = true;
    hiderLink.innerHTML = "» Hide Sidebar";
    
    if (isSinglePage == true){
      commentArea.style.width = "600px";
    }
  }
  else{
    sidebar.style.display="none";
    posts.id = "singleposts";
    sidebarVisible = false;
    hiderLink.innerHTML = "« Show Sidebar";
    
    if (isSinglePage == true){
      commentArea.style.width = "800px";
    }
  }
}