I have a problem with an js file in php.
if i include it like this:

```
?> <script type="text/javascript" href="file.js"></script> <?php

```

the file isn't included and i get an error that the function isn't defined.

When i try it this way:

```
<script type="text/javascript">
document.write('<script type="text/javascript" src="datetimepicker_css.js"></script>');
</script>

```

the first tag in the document.write function closes `<script type="text/javascript">`

what is the correct way to do this?

thanks, 
sebastian