ddaccordion.init({
        headerclass: "expandable",
        contentclass: "categoryitems",
        revealtype: "click",
        collapseprev: true,
        defaultexpanded: [777],
        onemustopen: false,
        animatedefault: false,
        persiststate: true,
        toggleclass: ["", "openheader"],
        togglehtml: ["prefix", "", ""],
        animatespeed: "normal",
        oninit:function(headers, expandedindices){
                //do nothing
        },
        onopenclose:function(header, index, state, isuseractivated){ //opened, closed
                //do nothing
        }
})