Is there a limit to amount of code that can be added to the HTML Header?

Question

I've got several javascript functions in the HTML Header section of the page attributes. I recently added another function and now receive an HTTP 404 Not Found error at runtime when navigating to the page. When I remove the function the error is gone. I don't think there is anything wrong with the function because even when I copy and rename an existing working function, this error occurs...as if I've exceeded some size limit. Any ideas?

Answer 1

I now have a better understanding after reading this thread: Javascript as static file or on filesystem?
As the post indicates, there are essentially two ways of including a .js file:
1) upload as static file to the workspace or application and refer to it using the #APP_IMAGES# or #WORKSPACE_IMAGES# tag.
2) put it on the webserver as a file on the filesystem under the images directory and refer to it using the #IMAGE_PREFIX# tag.
For now (since I don't have permissions to the file server directory) I have created a .js file and uploaded it as a static file in Shared Components. I referenced the file as below, but when I go the page at runtime, none of my functions are being utilized. Is it because the web server is not using this static file yet because of caching? Does it need to be restarted in order to start using the uploaded js file?
<script type="text/javascript" src="#WORKSPACE_IMAGES#apex_selection_criteria_page.js">
</script>