var toggleOpenBookingImg = function () {
    var $header = $(this).parent();
    var isSpecialFare = $header.attr("specialFare") == "True";
    //console.log("isSpecialFare: " + isSpecialFare);
    var html = "<div class='bookToggle'><img src='images/btn_book" + (isSpecialFare ? "_red" : "") + ".gif' /></div> ";
    //console.log(html);
    return html;
}

//Accordion Script:
ddaccordion.init({
    headerclass: "fare", //Shared CSS class name of headers group
    contentclass: "bookingContainer", //Shared CSS class name of contents group
    revealtype: "click", //Reveal content when user clicks or onmouseover the header? Valid value: "click" 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: [], //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: false, //persist state of opened contents within browser session?
    toggleclass: ["normal", "selectedFare"], //Two CSS classes to be applied to the header when it's collapsed and expanded, respectively ["class1", "class2"]
    togglehtml: ["prefix", toggleOpenBookingImg, "<div class='bookToggle'><img src='images/btn_close.gif' /></div> "], //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 (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
    }
})