2. Setup Plugin
Extract the plugin files and you will find they are in a folder called openmanager, copy this folder to the plugins folder of your TinyMCE installation – usually located in:
tiny_mceplugins
Then we have to register the plugin with TinyMCE and initialise our uploads folder (the folder where all our files will be stored).
So first, add ‘openmanager’ to the plugins list:
tinyMCE.init({
...
plugins : "openmanager",
...
})