function showForm(selectContent){
  var projects = document.getElementById('projects');
  var profile = document.getElementById('profile');
  var before_after = document.getElementById('before_after');
  
  
  
  var offset = $("#" + selectContent + "_nav").parent().offset({ scroll: false }); 
  
  if(selectContent == '')
  {
    projects.style.visibility = 'hidden';
    profile.style.visibility = 'hidden';
    before_after.style.visibility = 'hidden';
  }
  if(selectContent == "projects")
  {
    clearTimeout(t);
    $("#"+selectContent).css("top",offset["top"] + 8);
    $(projects).css("left",offset.left + 115);
    projects.style.visibility = 'visible';
    profile.style.visibility = 'hidden';
    before_after.style.visibility = 'hidden';
   
  }
  
  if(selectContent == "profile")
  {
    clearTimeout(t);
    $(profile).css("top",offset["top"] + 8);
    $(profile).css("left",offset.left + 110);
    projects.style.visibility = 'hidden';
    profile.style.visibility = 'visible';
    before_after.style.visibility = 'hidden';
  }
  
  if(selectContent == "before_after")
  {
    clearTimeout(t);
    $(before_after).css("top",offset["top"] + 8);
    $(before_after).css("left",offset.left + 130);
    projects.style.visibility = 'hidden';
    profile.style.visibility = 'hidden';
    before_after.style.visibility = 'visible';
  }

}