From SO#15909638, I whipped this for loop to create a tree-like structure to create a menu using http://jsfiddle.net/zzal/qdvuN/10/ as example

create-tree.js

var PlaceHolder = "PlaceHolder";
var myArr =
[{id:5, parentid:0, text:PlaceHolder},
 {id:6, parentid:0, text:PlaceHolder},
 {id:7, parentid:0, text:PlaceHolder},
 {id:8, parentid:7, text:PlaceHolder},
 {id:9, parentid:7, text:PlaceHolder},
 {id:10, parentid:5, text:PlaceHolder},
 {id:11, parentid:5, text:PlaceHolder},
 {id:12, parentid:7, text:PlaceHolder},
 {id:15, parentid:0, text:PlaceHolder},
 {id:16, parentid:15, text:PlaceHolder},
 {id:17, parentid:5, text:PlaceHolder},
 {id:18, parentid:15, text:PlaceHolder},
 {id:19, parentid:15, text:PlaceHolder},
 {id:20, parentid:0, text:PlaceHolder},
 {id:21, parentid:15, text:PlaceHolder},
 {id:23, parentid:5, text:PlaceHolder}];
 
for (var i = 0; i < myArr.length; i++){
  //console.log("outer: "+myArr[i].id)
  myArr[i].children = [];
  for (var q = 0; q < myArr.length; q++){
    //console.log("inner: "+myArr[q].id)
    if (myArr[i].id == myArr[q].parentid){
      // if want to keep the parentid key
      //var temp = {id:myArr[q].id,parentid:myArr[q],text:myArr[q].text}
      var temp = {id:myArr[q].id,text:myArr[q].text};
      myArr[i].children.push(temp);
    };
  };  
};

// Create menu from tree-like structure array
// http://jsfiddle.net/zzal/qdvuN/10/