/** 
* @@@BUILDINFO@@@ ShowFolderOf-THIS-Script.jsx !Version! Thu Jun 08 2017 10:00:24 GMT+0200 
*/ 
 
 
//DESCRIPTION:Show Folder of THIS script 
( 
	function() 
	{ 
		File($.fileName).parent.execute(); 
	}() 
); 

var txtFile = File.openDialog 
( 
	"Select a TextEdit *.txt File in the Finder",  
	function(file) 
	{  
		return file instanceof Folder || (!(file.hidden) && file.name.match(/\.txt$/i));  
	},  
	 
	false  
); 
 
if( txtFile == null ) 
{ 
	alert( "SCRIPT | User terminated action." ); 
	exit(0); 
} 
 
txtFile.execute(); 

tell application "Finder" 
    open POSIX file "/Ihr/vollständiger/POSIX/Pfad/zur/Datei.txt" 
end tell