To position the menu, you can simply add the appropriate HTML where you would like the menu to display. Then in the udm-custom.js file, look for this code:
Code:
//navbar orientation
um.orientation = [
"horizontal", // alignment ["vertical"|"horizontal"|"popup"|"expanding"]
"left", // h align ["left"|"right"]
"top", // v align ["top"|"bottom"]
"relative", // 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)
];
You'll probably want the alignment to be horizontal and the position to be relative.