addOnload(initDate);
addOnload(initRollOver);

function addOnload(newFunction) {
	var oldOnload = window.onload;
	
	if (typeof oldOnload == "function") {
		window.onload = function() {
			if (oldOnload) {
				oldOnload();
			}
			newFunction();
		}
	}
	else {
		window.onload = newFunction;
	} 
}

function initDate() {
	var dayName = new Array("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday");
	var monName = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
	
	var now = new Date();
	var thisMonth = now.getMonth() + 1;
	var dtString = dayName[now.getDay()]+ ", "+ monName[now.getMonth()] + " " + now.getDate() + ", " + now.getFullYear();
	document.getElementById("dateField").innerHTML = dtString;
}

function initRollOver() {
	for (var i=0; i<document.images.length; i++) {
		if (document.images[i].parentNode.tagName == "A") {
			setupRollover(document.images[i]);
		}
	}
}

function setupRollover(thisImage) {
	thisImage.outImage = new Image();
	thisImage.outImage.src = thisImage.src;
	thisImage.onmouseout = rollOut;

	thisImage.overImage = new Image();
	thisImage.overImage.src = "files/" + thisImage.id + "_on.png";
	thisImage.onmouseover = rollOver;
	
	thisImage.clickImage = new Image();
	thisImage.clickImage.src = "files/" + thisImage.id + "_off.png";
	thisImage.onmousedown = rollClick;
}

function rollOut() {
	this.src = this.outImage.src;
}

function rollOver() {
	this.src = this.overImage.src;
}

function rollClick() {
	this.src = this.clickImage.src;
}