/*!
	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

var usasearch = {};

if ((typeof usasearch_config === 'object') && (usasearch_config.constructor == Object)) {
  usasearch.config = usasearch_config;
} else {
  usasearch.config = {};
}

if (usasearch.config.host === undefined) {
  usasearch.config.host = '//search.usa.gov';
}

if (getElementsByClassName('usagov-search-autocomplete').length > 0) {
  var link = document.createElement("link");
  link.type = "text/css";
  link.href = usasearch.config.host +'/assets/sayt.css';
  link.rel = "stylesheet";
  link.media = "screen";
  document.getElementsByTagName("head")[0].appendChild(link);

  var script = document.createElement("script");
  script.type = "text/javascript";
  script.src = usasearch.config.host +'/assets/sayt_loader_libs.js';
  document.getElementsByTagName("head")[0].appendChild(script);
}

if (usasearch.config.siteHandle) {
  var aid = usasearch.config.siteHandle;

  if ((usasearch.config.enableDiscoveryTag === undefined) && (aid === 'cdc-main')) {
    usasearch.config.enableDiscoveryTag = true;
  }

  if (usasearch.config.enableDiscoveryTag) {
    var discoveryScript = document.createElement("script");
    discoveryScript.type = "text/javascript";
    discoveryScript.src = usasearch.config.host +'/assets/stats.js';
    document.getElementsByTagName("head")[0].appendChild(discoveryScript);
  }
};