1. Open File Manager:
<a href="filemanager/dialog.php?type=0&editor=mce_0" class="btn iframe-btn" type="button">Open File Manager</a><br/><br/>

2. Select Only Images (multiple selection):<br/>
<div class="input-append">
	<input id="fieldID" type="text" value="" >
	<a href="filemanager/dialog.php?type=1&field_id=fieldID&relative_url=1&multiple=1" class="btn iframe-btn" type="button">Select</a>
</div><br/>
3. Select Only Videos in POP-UP:<br/>
<div class="input-append">
  <input  id="fieldID1" type="text" value="" >
  <a href="javascript:open_popup('filemanager/dialog.php?type=3&popup=1&field_id=fieldID1')" class="btn" type="button">Select</a>
</div><br/>
4. Select All Files (relative path):<br/>
<div class="input-append">
  <input id="fieldID2" type="text" value="" >
  <a href="filemanager/dialog.php?type=2&field_id=fieldID2&relative_url=1" class="btn iframe-btn" type="button">Select</a>
</div>
5. CROSS-DOMAIN
<div class="input-append">
  <input id="fieldID3" type="text" value="" >
  <a href="http://test.albertoperipolli.com/secondaryserver/rfm0123/dialog.php?type=2&field_id=fieldID3&crossdomain=1" class="btn iframe-btn" type="button">Select</a>
</div>
6.So if you want use filemanager in a multiuser CMS you can simply create a folder for each user and set a 
	session variable ($_SESSION['RF']['subfolder']) with the name of the user folder.
7.
You can use normal pop-up, Bootstrap modal, iframe, FancyBox iframe, Lightbox iframe to open the FileManager with these paths:

Only open filemanager(type=0 and not set field_id):
path to filemanager../filemanager/dialog.php?type=0&fldr=

Select Image: (type=1 and set id of input text in field_id variable):
path to filemanager../filemanager/dialog.php?type=1&field_id=fieldID

Select Video: (type=3 and set id of input text in field_id variable):
path to filemanager../filemanager/dialog.php?type=3&field_id=fieldID

Select File: (type=2 and set id of input text in field_id variable):
path to filemanager../filemanager/dialog.php?type=2&field_id=fieldID

Get Variables list
type: the type of filemanager (1:images files 2:all files 3:video files)
fldr: the folder where i enter (the root folder remains the same). default=""
sort_by: the element to sorting (values: name,size,extension,date) default=""
descending: descending? or ascending (values=1 or 0) default="0"
lang: the language code (ex: &lang=en_EN). default="en_EN"
relative_url: should be added to the request with a value of "1" when opening RFM. Otherwise returned URL-s will be absolute. extensions: a json encoded 
array of available files extensions (ex: &extensions=["pdf",'doc'])

If you want use popup add in the address &popup=1

PS If you want to force loading at root set fldr to /

In demo page i used FancyBox with this configuration:

        $('.iframe-btn').fancybox({	
    	'width'		: 900,
    	'height'	: 600,
    	'type'		: 'iframe',
            'autoScale'    	: false
        });


		
Bootstrap => https://twitter.github.io/bootstrap/
Featherlight => https://github.com/noelboss/featherlight
Dropzonejs => http://www.dropzonejs.com/
Fancybox => http://fancybox.net/
TouchSwipe => http://labs.rampinteractive.co.uk/touchSwipe/demos/
PHP Image Magician => http://phpimagemagician.jarrodoberto.com/
Mini icons => http://www.fatcow.com/free-icons‎
JUpload => http://jupload.sourceforge.net/
Bootbox => http://bootboxjs.com/
jQuery contextMenu => https://swisnl.github.io/jQuery-contextMenu/
Bootstrap-modal => https://github.com/jschr/bootstrap-modal
jPlayer => https://jplayer.org/
Lazy Load => https://www.andreaverlicchi.eu/lazyload/
jQuery-File-Upload => https://github.com/blueimp/jQuery-File-Upload