docs: re-add download.jd file to support archived SDK downloads

Change-Id: If814238c8fa017ce10e7fe770826a1e162fe5e87

Author: scottamain

docs/html/sdk/download.jd

@@ -0,0 +1,92 @@
+page.title=Download an Archived Android SDK
+hide_license_footer=true
+
+@jd:body
+
+<script type="text/javascript">
+  function verify() {
+    document.getElementById('download-button').disabled =
+!document.getElementById('checkbox').checked;
+  }
+  function submit() {
+    var location = window.location.href;
+    if (location.indexOf('?v=') != -1) {
+      var filename = location.substring(location.indexOf('=')+1,location.length);
+      if (document.getElementById('checkbox').checked) {
+        document.location = "http://dl.google.com/android/" + filename;
+      }
+      document.getElementById('click-download').setAttribute("href", "http://dl.google.com/android/"
++ filename);
+      $("#terms-form").hide(500);
+      $("#next-steps").show(500);
+      document.getElementById('checkbox').disabled=true;
+      document.getElementById('download-button').disabled=true;
+    } else {
+      alert("You have not selected an SDK version. Please return to the SDK Archives page");
+    }
+  }
+</script>
+
+<div id="terms-form">
+    <p>Please carefully review the Android SDK License Agreement before downloading the SDK.
+The License Agreement constitutes a contract between you and Google with respect to your use of the
+SDK.</p>
+    <p class="note"><strong>Note:</strong> You must agree to this license agreement in order to
+download one of the archived SDKs, because these SDK packages contain Google software (whereas, the
+<a href="http://developer.android.com/sdk/index.html">current SDK</a> packages do not require a
+license agreement, because they contain only the open sourced SDK tools).</p>
+
+  <iframe id="terms" style="border:1px solid #888;margin:0 0 1em;height:400px;width:100%;"
+src="terms_body.html">
+  </iframe>
+
+  <p>
+    <input type="checkbox" id="checkbox" onclick="verify()" />
+    <label for="checkbox">I agree to the terms of the Android SDK License Agreement.</label>
+  </p>
+  <p>
+    <input type="submit" value="Download" id="download-button" disabled="disabled"
+onclick="submit()" />
+  </p>
+  <p>
+  <script language="javascript">
+    var loc = window.location.href;
+    if (loc.indexOf('?v=') != -1) {
+      var filename = loc.substring(loc.indexOf('=')+1,loc.length);
+      document.write("File: " + filename);
+    }
+  </script>
+  </p>
+</div><!-- end terms-form -->
+
+<noscript>
+  <p><strong>Please enable Javascript in your browser in order to agree to the terms and download
+the SDK.</strong></p>
+</noscript>
+
+<div class="special" id="next-steps" style="display:none">
+  <p>Your download should be underway. If not, <a id="click-download">click here to start the
+download</a>.</p>
+  <p>Beware that you've just downloaded a very old version of the Android SDK, which is not
+recommended. We no longer maintain documentation about how to install these archived SDKs nor
+support the tools contained within.</p>
+  <p>We recommend that you instead download the latest <a
+href="http://developer.android.com/sdk/index.html">Android SDK starter package</a>, which includes
+the latest SDK tools and allows you to develop against any version of the Android platform, back to
+Android 1.1.</p>
+</div>
+
+<script type="text/javascript">
+  var loc = window.location.href;
+  var filename = loc.substring(loc.indexOf('=')+1,loc.length);
+  version = filename.substring(filename.indexOf('.')-1,filename.lastIndexOf('.'));
+  $(".addVersionPath").each(function(i) {
+    var oldHref = $(this).attr("href");
+    $(this).attr({href: "/sdk/" + version + "/" + oldHref});
+  });
+</script>
+
+
+
+
+