diff --git a/index.js b/index.js
index e31269a..d32a62f 100644
--- a/index.js
+++ b/index.js
@@ -1,9 +1,9 @@
 module.exports = function inspect_ (obj, opts, depth, seen) {
     if (!opts) opts = {};
     
-    var maxDepth = opts.depth || 5;
+    var maxDepth = opts.depth === undefined ? 5 : opts.depth;
     if (depth === undefined) depth = 0;
-    if (depth > maxDepth) return '...';
+    if (depth > maxDepth && maxDepth > 0) return '...';
     
     if (seen === undefined) seen = [];
     else if (seen.indexOf(obj) >= 0) {
diff --git a/readme.markdown b/readme.markdown
index 28b4fa7..86e4e3c 100644
--- a/readme.markdown
+++ b/readme.markdown
@@ -4,7 +4,16 @@ inspect objects in node and in the browser
 
 # example
 
-## browser
+## circular
+
+``` js
+var inspect = require('object-inspect');
+var obj = { a: 1, b: [3,4] };
+obj.c = obj;
+console.log(inspect(obj));
+```
+
+## dom element
 
 ``` js
 var inspect = require('object-inspect');
@@ -22,4 +31,25 @@ output:
 [ <div id="beep">...</div>, { a: 3, b: 4, c: [ 5, 6, [ 7, [ 8, [ ... ] ] ] ] } ]
 ```
 
-## node
+# methods
+
+``` js
+var inspect = require('object-inspect')
+```
+
+## var s = inspect(obj, opts={})
+
+Return a string `s` with the string representation of `obj` up to a depth of
+`opts.depth`.
+
+# install
+
+With [npm](https://npmjs.org) do:
+
+```
+npm install object-inspect
+```
+
+# license
+
+MIT