function pdfLinks() {
	var list = document.getElementsByTagName("a");
	var test = "";
	for (item in list) {
		
		if (item.href != "") {
			test = item.href.substr(item.href.length - 3, 3);
			if (test == "pdf") {
				alert("found one");
				item.parentNode.className = "pdf"
			}
		}
	}
}