I just want to show only the 1st level of the sub link and collapse all the 2nd and 3rd levels of links. by showing all levels of links really look very messy.
The built-in open
functions will override the default mechanism that the menu link that matches the current page URL pattern will be automatically selected and opened at page load.
I had tried that option but they either close all or show all the levels. Which I don't want to show the 3rd, 4th levels all together. Thanks again
Regretfully it seems the current version doesn't support your requirement.