Issue with expanding multiple nested levels menu

[milkmandan]

I seem to be answering all my own questions...

I found the solution to my problem.
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With the expanding nested menu, the config file (*.ini for php, *.js for html) has a css position attribute in there. It is set to 'absolute' by default. I just had to make it 'relative', and everything worked like a charm.

//navbar orientation
$um['orientation'] = array(
	'vertical',	// alignment ["vertical"|"horizontal"|"popup"|"expanding"]
	'left',		// h align ["left"|"right"]
	'top',		// v align ["top"|"bottom"]
	'absolute',	// positioning ["relative"|"absolute"|"fixed"|"allfixed"]
	'0.5em',		// x position ["em"|"ex"|"px"|"0"]
	'0.5em',		// y position ["em"|"ex"|"px"|"0"]
	'1000'		// z order ["0" to "10000"] (menu takes 20000 headroom)
	);

Change the parameter above to relative, and it works~
I was stupid not to think of this earlier.