! Save-Load Scroll Position Toggle (bookmarklet)

saveLoadScrollPositionToggle.js

javascript: (function () {
   if (!localStorage.getItem("position")) {
      localStorage.setItem("position", document.documentElement.scrollTop);
      target = prompt('Saved positon at: ' + localStorage.getItem("position") + '\nDefine a tag: ', '#yourTagName');
   } else {
      scrollTo(0, localStorage.getItem("position"));
      alert('Go to load "' + target + '" at scroll position: ' + localStorage.getItem("position"));
      localStorage.removeItem("position");
   }
})();