function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
}

function linkControl() {

	var filetype = ".pdf";
	var filetype2 = ".jpg";
	var thishost = window.location.host;

	if (!document.getElementsByTagName) return false;
	var links = document.getElementsByTagName("a");
	for (var i=0; i<links.length; i++) {
		var link = links[i];

		if ((link.host.indexOf(thishost) == -1) && (link.href.indexOf('@') == -1) ) {
			link.onclick = function() {
				window.open(this.href);
				return false;
			}
		}

		if ((link.getAttribute("href").indexOf(filetype) != -1) ||
			(link.getAttribute("href").indexOf(filetype2) != -1)) {
			link.onclick = function() {
				window.open(this.href);
				return false;
			}
		}

	}
}

addLoadEvent(linkControl);

function popup(anchor) {
	var URL = anchor.getAttribute("href");
	var params = "width=500,height=400,left=50,top=50";
	F1 = window.open(URL,"Popup",params);
	F1.focus();
	return false;
}