Pixiv Header jama

manifest.json

{
  "manifest_version": 2,
  "name": "Pixiv Header jama",
  "version": "1.0.0",
  "description": "Remove Pixiv header if you are not logged in",
  "permissions": [ "http://www.pixiv.net/*"],
  "content_scripts": [
    {
      "matches": [ "http://www.pixiv.net/*"],
      "js": ["remover.js"]
    }
  ]
}

remover.js

setTimeout(function(){
  var header = document.querySelector('.introduction-container')
  if(!header) return;
  if(location.pathname === "/") return;

  header.style.display = "none";
  var login = document.querySelector('.newindex-signin');
  var container = document.querySelector('.newindex-inner');
  login.style.position = "static";
  container.insertBefore(login, container.firstChild);
}, 0);