[Plugin: Insert JavaScript and CSS] Javascript with document.write()

I’m wanting to add JavaScript generated by Obfuscate Mail, which uses the document.write() method. However, this plugin doesn’t seem to actually write anything to the post. Ideally, I would like to be able to type in content on the page and then specify where I want the JavaScript to write, but if necessary, I would be alright with just putting the entire content of the page into document.write().

https://www.ads-software.com/extend/plugins/insert-javascript-css/