more flexible parameters handling for Element.appearOn. we can use many syntax. first parameter is mandatory, but opacity and options are optional and can be used in any order. we can use many syntax:
more flexible parameters handling for Element.appearOn. we can use many syntax. first parameter is mandatory, but opacity and options are optional and can be used in any order. we can use many syntax:

el.appearOn([element1, element2, ...]);

el.appearOn(el, opacity);

el.appearOn(el, options);

el.appearOn(el, options, opacity);

el.appearOn(el, opacity, options);

el.appearOn(element, options)

cpojer/mootools-filemanager,cpojer/mootools-filemanager