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diff --git a/ietf/static/ietf/js/room_params.js b/ietf/static/ietf/js/room_params.js
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+++ b/ietf/static/ietf/js/room_params.js
@@ -0,0 +1,173 @@
+var verbose = 0;
+
+function suffixmap(nm)
+// Given a name like "foo-ab" or "foo-X-and-Y", change it to the "list-of-room-names" format, "foo-a/foo-b".
+{
+    var andsuffix = /^(.*-)([^-]+)-and-(.*)$/;
+    var andMatch = andsuffix.exec(nm);
+    if (andMatch && andMatch[0] != '') {
+	nm = andMatch[1] + andMatch[2] + "-" + andMatch[3];
+    }
+    // xyz-a/b/c => xyz-a/xyz-b/xyz-c
+    var abcsuffix = /^(.*)-([a-h0-9]+)[-\/]([a-h0-9]+)([-\/][a-h0-9]+)?$/;
+    var suffixMatch = abcsuffix.exec(nm);
+    if (verbose) alert("nm=" + nm);
+    if (suffixMatch && suffixMatch[0] != '') {
+	if (verbose) alert("matched");
+	nm = suffixMatch[1] + "-" + suffixMatch[2] + "/" +
+	     suffixMatch[1] + "-" + suffixMatch[3];
+	if (verbose) alert("nm=>" + nm);
+	if (suffixMatch[4] && suffixMatch[4] != '')
+	     nm += "/" + suffixMatch[1] + "-" + suffixMatch[4];
+	if (verbose) alert("nm=>" + nm);
+    }
+    // xyz-abc => xyz-a/xyz-b/xyz-c
+    abcsuffix = /^(.*)-([a-h])([a-h]+)([a-h])?$/;
+    var suffixMatch = abcsuffix.exec(nm);
+    if (suffixMatch && suffixMatch[0] != '') {
+	nm = suffixMatch[1] + "-" + suffixMatch[2] + "/" +
+	     suffixMatch[1] + "-" + suffixMatch[3];
+	if (suffixMatch[4] && suffixMatch[4] != '')
+	     nm += "/" + suffixMatch[1] + "-" + suffixMatch[4];
+    }
+    if (verbose) alert("suffixmap returning: " + nm);
+    return nm;
+}
+
+function roomcoords(nm)
+// Find the coordinates of a room or list of room names separated by "/".
+// Calls the function findroom() to get the coordinates for a specific room.
+{
+    if (!nm) return null;
+
+    if (nm.match("/")) {
+        var nms = nm.split("/");
+	var nm0 = findroom(nms[0]);
+	if (!nm0) return null;
+	for (var i = 1; i < nms.length; i++) {
+	    var nmi = roomcoords(nms[i]);
+	    if (!nmi) return null;
+	    if (nmi[0] < nm0[0]) nm0[0] = nmi[0];
+	    if (nmi[1] < nm0[1]) nm0[1] = nmi[1];
+	    if (nmi[2] > nm0[2]) nm0[2] = nmi[2];
+	    if (nmi[3] > nm0[3]) nm0[3] = nmi[3];
+	}
+	return [nm0[0], nm0[1], nm0[2], nm0[3]];
+    } else {
+	return findroom(nm);
+    }
+}
+
+function setarrow(nm, fl)
+// Place an arrow at the center of a given room name (or list of room names separated by "/").
+{
+    for (var i = 0; i < arrowsuffixlist.length; i++) {
+       removearrow(arrowsuffixlist[i], fl);
+    }
+    for (var i = 0; i < arguments.length; i+=2) {
+       nm = roommap(arguments[i]);
+       if (verbose) alert("nm=" + nm);
+       var rooms = nm.split(/[|]/);
+       for (var j = 0; j < rooms.length; j++) {
+	  var room = rooms[j];
+	  var ret = roomcoords(room);
+	  if (verbose) alert("roomcoords returned: " + ret);
+	  if (!ret) continue;
+
+	  var left = ret[0], top = ret[1], right = ret[2], bottom = ret[3], offsetleft = -25, offsettop = -25;
+	  if (verbose) alert("left=" + left + ", top=" + top + ", right=" + right + ", bottom=" + bottom);
+	  //alert("left=" + left + ", top=" + top + ", right=" + right + ", bottom=" + bottom);
+	  var arrowdiv = fl+'-arrowdiv' + (j > 0 ? j : "");
+	  //if (verbose) alert("arrowdiv: " + arrowdiv);
+	  var adiv = document.getElementById(arrowdiv);
+	  // if (verbose) alert("looking for 'arrowdiv'+" + j);
+	  if (adiv) {
+	      //if (verbose) alert("adiv found");
+	      adiv.style.left = left + (right - left) / 2 + offsetleft;
+	      adiv.style.top = top + (bottom - top) / 2 + offsettop;
+	      adiv.style.visibility = "visible";
+	  }
+      }
+   }
+}
+
+function removearrow(which, fl)
+{
+    for (var i = 0; i < arguments.length; i++) {
+       var which = arguments[i];
+       var arrowdiv = fl+'-arrowdiv' + (which ? which : "");
+       var adiv = document.getElementById(arrowdiv);
+       // if (verbose) alert("looking for '" + arrowdiv + "'");
+       if (adiv) {
+	   // if (verbose) alert("adiv found");
+	   adiv.style.left = -500;
+	   adiv.style.top = -500;
+	   adiv.style.visibility = "hidden";
+       }
+   }
+}
+
+function setarrowlist(which, names)
+{
+   for (var i = 1; i < arguments.length; i++) {
+      setarrow(arguments[i], which);
+   }
+}
+
+function QueryString()
+// Create a QueryString object
+{
+    // get the query string, ignore the ? at the front.
+    var querystring = location.search.substring(1);
+
+    // parse out name/value pairs separated via &
+    var args = querystring.split('&');
+
+    // split out each name = value pair
+    for (var i = 0; i < args.length; i++) {
+        var pair = args[i].split('=');
+
+        // Fix broken unescaping
+        var temp = unescape(pair[0]).split('+');
+        var name_ = temp.join(' ');
+
+        var value_ = '';
+        if (typeof pair[1] == 'string') {
+            temp = unescape(pair[1]).split('+');
+            value_ = temp.join(' ');
+        }
+
+        this[name_] = value_;
+    }
+
+    this.get = function(nm, def) {
+        var value_ = this[nm];
+        if (value_ == null) return def;
+        else return value_;
+    };
+}
+
+function checkParams()
+// Check the parameters for one named "room". If found, call setarrow(room).
+{
+    var querystring = new QueryString();
+    var room = querystring.get("room");
+    if (room && room != "") setarrow(room);
+}
+
+// new functions
+function located(loc)
+{
+   if (loc.civic && loc.civic.ROOM) {
+      // map from "TerminalRoom" to "terminal-room" as necessary.
+      setarrow(loc.civic.ROOM.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase(), "-green");
+   }
+}
+
+// this needs to be called onload
+function automaticarrow()
+{
+    //   if (navigator.geolocation) {
+    //      navigator.geolocation.getCurrentPosition(located);
+    //   }
+}