ddaccordion.init({
  headerclass: "expandable",
  contentclass: "categoryitems",
  collapseprev: true,
  defaultexpanded: [],
  animatedefault: false,
  persiststate: false,
  toggleclass: ["", "openheader"],
  togglehtml: ["suffix", "<img src='/img/plus.gif' class='statusicon' />", "<img src='/img/minus.gif' class='statusicon' />"],
  animatespeed: "normal"
})
// wrapScroll
var mov = new wrapScroll('accordion_menu','container','header');
mov.marginTop = 5;  //上からの位置を指定(px)