>>I don't want to alert the user about the height.

 

This is only a code example showing you how to get the runtime height. I am not showing you how the alert funtion works.

 

After you get the runtime height of editor, you can do whatever you want. If you don't agree my suggestion, you can write your own code.

 

>>allows me to call javascript at the client so I can stuff the height into a hidden var.

 

Please note that a local JavaScript var will be lost when page posts back.