/**
 * External link (target) handler.
 */
var JSTarget = {
	init : function(att, val, warning) {
		if (document.getElementById && document.createElement
				&& document.appendChild) {
			var strAtt = ((typeof att == 'undefined') || (att == null)) ? 'class'
					: att;
			var strVal = ((typeof val == 'undefined') || (val == null)) ? 'non-html'
					: val;
			var strWarning = ((typeof warning == 'undefined') || (warning == null)) ? ' (opens in a new window)'
					: warning;
			var oWarning;
			var arrLinks = document.getElementsByTagName('a');
			var oLink;
			var oRegExp = new RegExp("(^|\\s)" + strVal + "(\\s|$)");

			for ( var i = 0; i < arrLinks.length; i++) {
				oLink = arrLinks[i];
				if ((strAtt == 'class') && (oRegExp.test(oLink.className))
						|| (oRegExp.test(oLink.getAttribute(strAtt)))) {
					oWarning = document.createElement("em");
					oWarning.appendChild(document.createTextNode(strWarning));
					oLink.appendChild(oWarning);
					oLink.onclick = JSTarget.openWin;
				}
			}

			oWarning = null;
		}
	},

	openWin : function(e) {
		var event = (!e) ? window.event : e;

		if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) {
			return true;
		} else {
			var oWin = window.open(this.getAttribute('href'), '_blank');
			if (oWin) {
				if (oWin.focus)
					oWin.focus();
				return false;
			}
			oWin = null;
			return true;
		}
	},

	addEvent : function(obj, type, fn) {
		if (obj.addEventListener) {
			obj.addEventListener(type, fn, false);
		} else if (obj.attachEvent) {
			obj["e" + type + fn] = fn;
			obj[type + fn] = function() {
				obj["e" + type + fn](window.event);
			}
			obj.attachEvent("on" + type, obj[type + fn]);
		}
	}
};

JSTarget.addEvent(window, 'load', function() {
	JSTarget.init("rel", "external", "");
});