function getQuerystring(key, default_)
    {
      if (default_==null) default_="";
      key = key.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
      var regex = new RegExp("[\\?&]"+key+"=([^&#]*)");
      var qs = regex.exec(window.location.href);
      if(qs == null)
        return default_;
      else
        return qs[1];
    }

    var url = document.location.href;
    var expandedNode = -1;

    if (url.search(/about/i) != -1) {
        expandedNode = 0;
    } else if (url.search(/technology/i) != -1) {
        expandedNode = 1;
    } else if (url.search(/applications/i) != -1) {
        expandedNode = 2;
    } else {
		expandedNode = getQuerystring('idx', -1);
	}




//Initialize first demo:
ddaccordion.init({
headerclass: "bucketHeader", //Shared CSS class name of headers group
contentclass: "bucketContent", //Shared CSS class name of contents group
revealtype: "click", //Reveal content when user clicks or onmouseover the header? Valid value: "click", "clickgo", or "mouseover"
collapseprev: true, //Collapse previous content (so only one open at any time)? true/false
defaultexpanded: [expandedNode], //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: ["", "bucketExpanded"], //Two CSS classes to be applied to the header when it's collapsed and expanded, respectively ["class1", "class2"]
togglehtml: ["none", "", ""], //Additional HTML added to the header when it's collapsed and expanded, respectively ["position", "html1", "html2"] (see docs)
animatespeed: "normal", //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 initialized
 for (var i=0; i<expandedindices.length; i++){
  var expandedindex=expandedindices[i] //index of current expanded header index within array
  //headers[expandedindex].style.backgroundColor=''
  //headers[expandedindex].style.color=''
 }
}
})