/* image rollovers */

	buttons = new Array('comingevents','boardmembers', 'history', 'specialprojects', 'acrs', 'codecommittees', 'services', 'prizes', 'scholarships', 'findanengineer','home', 'w3');
	buttonOff = new Array();
	buttonOn = new Array();

for(var i=0; i <= buttons.length-1; i++) {
	buttonOff[buttons[i]] = document.createElement("img");
	buttonOff[buttons[i]].src = "images/but_" + buttons[i] + ".gif";

	buttonOn[buttons[i]] = document.createElement("img");
	buttonOn[buttons[i]].src = "images/but_" + buttons[i] + "_.gif";
}

// functions to do the image swapping
function swapOn(image) {
		document[image].src = buttonOn[image].src;
}

function swapOff(image) {
		document[image].src = buttonOff[image].src;
}

function showDescription() {
	var redImage = document.getElementById('redImage');
	var imageDescription = document.getElementById('imageDescription');
	leftPosition = (redImage.offsetLeft + redImage.width) - parseInt(imageDescription.style.width) - 10; 
	imageDescription.style.left = leftPosition;
	imageDescription.style.visibility = 'visible';
}

function hideDescription() {
	var imageDescription = document.getElementById('imageDescription');
	imageDescription.style.visibility = 'hidden';
}