ddaccordion.init(
    {
        headerclass: "expandable", //Shared CSS class name of headers group that are expandable
        subclass: "subexpandable", //Shared CSS class name of headers group that are expandable
        contentclass: "categoryitems", //Shared CSS class name of contents group
        revealtype: "click", 
        //Reveal content when user clicks or onmouseover the header? Valid value: "click", "clickgo", or "mouseover"
        mouseoverdelay: 200,    //if revealtype="mouseover", set delay in milliseconds before header expands onMouseover
        collapseprev: true,     //Collapse previous content (so only one open at any time)? true/false 
        defaultexpanded: [0], //index of content(s) open by default [index1, index2, etc]. [] denotes no content
        onemustopen: false, //Specify whether at least one header should be open always (so never all headers closed)
        animatedefault: false, //Should contents open by default be animated into view?
        persiststate: true, //persist state of opened contents within browser session?
        toggleclass: ["", "openheader"], 
            //Two CSS classes to be applied to the header when it's collapsed and expanded, respectively ["class1", "class2"]
        togglehtml: ["prefix", "", ""], 
            //Additional HTML added to the header when it's collapsed and expanded, respectively
            //["position", "html1", "html2"] (see docs)
        animatespeed: "fast", 
            //speed of animation: integer in milliseconds (ie: 200), or keywords "fast", "normal", or "slow"
        oninit: function(headers, expandedindices) 
        { //custom code to run when headers have initalized do nothing
        },
        onopenclose: function(header, index, state, isuseractivated) { 
        //custom code to run whenever a header is opened or closed do nothing
    }
})