This must be super newbie question.

If I create a javascript function in my page javascript, like the following:

function TestMsg()
{
  alert('Test Message');
}

everything works. In the javascript, before the above function is written, I can call:

TestMsg();

and Alert shows the message.

But if I move the above function to an external .js file (e.g. dmitry.js) as follows:

<script type="text/javascript">
function TestMsg() {
  alert('test message');
}
</script>

I check in the Chrome that the file dmitry.js is loaded. But when I call TestMsg(); in the javascript, nothing alerts.

What am I missing?