// Simplify getElementById()
function $(id) {
  return document.getElementById(id);
}

/* 
 * Cross-browser event model helper function
 *
 * addEvent(window, 'load', 'functionName');
 * addEvent(window, 'load', function() { doSomething(someParam); });
 */
 
var addEvent;
if (document.addEventListener) { // Non-IE
	addEvent = function(element, type, handler) {
		element.addEventListener(type, handler, false);
	};
} else if (document.attachEvent) { // IE6+
    addEvent = function(element, type, handler) {
        element.attachEvent("on" + type, handler);
    };
} else { // Older Browsers
    addEvent = function(element, type, handler) {
		var oldHandler = element['on' + type];
		if (oldHandler === null) {
			element['on' + type] = handler;
		} else {
			element['on' + type] = function(e) { oldHandler(e); handler(e); };
		}
	};
}

function copyrightDate(startYear) {
	var d = new Date();
	var y = new Date().getFullYear();
	
	var result = (y != startYear) ? startYear + "-" + y : startYear;
	return result;
}

// External Links Script
function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;