// Track document downloads in Google Analytics
function trackGADownload() {
	var hrefList = document.getElementsByTagName("a");  
	var docList = [".doc", ".pdf"];  // Type of documents to track
	for (var i = 0; i < hrefList.length; i++) {
		var _href = hrefList[i].href;
		if (_href.indexOf('/') == 0) { // Only track documents in current website
			for (var j = 0; j < docList.length; j++) {
				if (_href.indexOf(extDoc[j]) != -1) {
					hrefList[i].onclick = "_gaq.push(['_trackPageview', '" + this.href + "']);";
					break;
				}
			}
		}
	}
}
trackGADownload();