function h(s){if (!$(s)) return; $(s).style.display = "none";}
function s(s){if (!$(s)) return; $(s).style.display = "block";}
function vv(s){if (!$(s)) return; $(s).style.visibility = "visible";}
function vh(s){if (!$(s)) return; $(s).style.visibility = "hidden";}

function String.prototype.trim(){return this.replace(/(^\s*)|(\s*$)/g,"");}
function $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1)
      return element;

    elements.push(element);
  }

  return elements;
}

ddaccordion.init({ //top level headers initialization
	headerclass: "expandable", //Shared CSS class name of headers group that are expandable
	contentclass: "categoryitems", //Shared CSS class name of contents group
	revealtype: "mouseover", //Reveal content when user clicks or onmouseover the header? Valid value: "click" or "mouseover
	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: 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: "normal", //speed of animation: "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
	}
})

ddaccordion.init({ //2nd level headers initialization
	headerclass: "subexpandable", //Shared CSS class name of sub headers group that are expandable
	contentclass: "subcategoryitems", //Shared CSS class name of sub contents group
	revealtype: "mouseover", //Reveal content when user clicks or onmouseover the header? Valid value: "click" or "mouseover
	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: true, //persist state of opened contents within browser session?
	toggleclass: ["opensubheader", "closedsubheader"], //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: "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
	}
})