MIT Course Catalog Searcher

This extension shows the course description for current highlighted text
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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "MIT Course Catalog Searcher",
  "description": "This extension shows the course description for current highlighted text",
  "version": "1.11",
  "browser_action": {
    "default_popup": "defaultPopup.html",
    "default_title": "MIT Course Catalog Searcher"
  },
  "icons": {
    "128": "logo2.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "http://student.mit.edu/catalog/"
  ]
}