Resize Google Spreadsheet's Chat/Collaboration area. This is intended to be copy/pasted into a Chrome browser bookmark.

gsschat_resize.js

javascript:(function(){
  var x = prompt('Enter the desired width, in pixesl. (default: 250)', 250);
  document.getElementsByClassName('docs-chat-pane-container')[0].style.width = x + 'px';
  document.getElementsByClassName('docs-chat-edit-container')[0].style.width = x + 'px';
  document.getElementsByClassName('docs-chat-edit-box')[0].style.width = (x - 32) + 'px';
  document.getElementById('docs-chat-messages').children[document.getElementById('docs-chat-messages').children.length-1].scrollIntoView();
}());