//cleanUpPStyleNames.jsx 
 
var myStyles = app.activeDocument.paragraphStyles; 
 
cleanUpName(".", "_"); 
cleanUpName("ä", "ae"); 
cleanUpName("ö", "oe"); 
cleanUpName("ü", "ue"); 
	 
function cleanUpName(oldChar, newChar) 
{ 
	for (i = 2; i < myStyles.length; i++) 
		myStyles[i].name = myStyles[i].name.split(oldChar).join(newChar); 
}