// http://www.iqcontent.com/blog/files/taglinks.js

var hrefs = document.getElementsByTagName("a");
var link_path = "";

for (var l = 0; l < hrefs.length; l++) {
		try {
			// Add the hostname and link location into variables
			var link_path = hrefs[l].pathname;
			var link_location = String(hrefs[l]);

			// Check to see if the link is an internal link
			if (location.host == hrefs[l].hostname) {
				if (link_path.match(/\.(doc|pdf|xls|ppt|zip|txt|vsd|vxd|js|css|rar|exe|wma|mov|avi|wmv|mp3)$/)) {
					addtrackerlistener(hrefs[l]);
				}
			}
		} catch(err) {
		}
}

// Add a listener to matching file links
function addtrackerlistener(obj) {
	if (obj.addEventListener) {
		obj.addEventListener('click', trackfiles, true);
	} else if (obj.attachEvent) {
		obj.attachEvent("on" + 'click', trackfiles);
	}
}

// Track file links
function trackfiles(array_element) {
	var file_path = "";
	// Track an internal link
	var destination_host = (array_element.srcElement) ? array_element.srcElement.hostname : this.hostname;
	if (location.host == destination_host) {
		file_path = ((array_element.srcElement) ? "/" + array_element.srcElement.pathname : this.pathname);	
		// var file_details = file_path.split('/');
		// file_path = cleanURL(window.location, true) + '/' + file_details[(file_details.length-1)];
		// file_path =  (("/virtual/download/") + file_path);
		file_path = '/' + file_path.replace(/^.*[\/\\]/g, '');
		pageTracker._trackPageview(file_path);
	}
}

// Clean leading & trailing slashes
function cleanURL (url, end) {
	var url = url.toString();
	var urlLen = url.length;
	
	if (end) {
		if (url.charAt((urlLen-1))=='/')
			url = url.substring(0,(urlLen-1));
	}
	else {
		if (url.charAt(0)=='/')
			url = url.substring(1,urlLen);
	}
	return url;
}