//set up some variables
function init() {
	selected = null;
	sections = new Array('about', 'projects', 'articles', 'links');
	buttonDir = 'images/buttons/';}

//make specified button to rollover image.  make all other buttons original image.
function rollOver(objectName) {
	document.getElementById(objectName).src = buttonDir + objectName + '2.gif';
	document.getElementById(objectName).blur();
}

//make specified button to original image.
function rollOut(objectName) {
	document.getElementById(objectName).src = buttonDir + objectName + '1.gif';
}