main_onload.patch

diff --git a/website/manual.md b/website/manual.md
index 4025e5ac..de489ed8 100644
--- a/website/manual.md
+++ b/website/manual.md
@@ -425,7 +425,7 @@ $ deno run --allow-net=deno.land allow-net-whitelist-example.ts
 Example:
 
 ```ts
-async function main() {
+window.onload = async function() {
   // create subprocess
   const p = Deno.run({
     args: ["echo", "hello"]
@@ -434,8 +434,6 @@ async function main() {
   // await its completion
   await p.status();
 }
-
-main();
 ```
 
 Run it:
@@ -450,7 +448,7 @@ By default when you use `Deno.run()` subprocess inherits `stdin`, `stdout` and
 you can use `"piped"` option.
 
 ```ts
-async function main() {
+window.onload = async function() {
   const decoder = new TextDecoder();
 
   const fileNames = Deno.args.slice(1);
@@ -480,8 +478,6 @@ async function main() {
 
   Deno.exit(code);
 }
-
-main();
 ```
 
 When you run it: