function showRollover(btn, txt) {
	var rolloverContainer = document.getElementById('rolloverContainer');
	if(!rolloverContainer) {
		rolloverContainer = document.createElement('div');
		rolloverContainer.id = 'rolloverContainer';
		document.getElementById('tier4').appendChild(rolloverContainer);
		rolloverContainer.onmouseout = function() {
			this.style.display = "none"
		}
	}
	rolloverContainer.innerHTML = "<p>"+txt+"<\/p>";
	rolloverContainer.style.display = "block";
	
	var pos = getXY(btn);

	rolloverContainer.style.left = (pos[0]-290) + "px";
	rolloverContainer.style.top = (pos[1]-72) + "px";
}

function getXY(obj) {
	var intX = 0;
	var intY = 0;
	do { // Walk up our document tree until we find the body and add the distance from the parent to our counter.
		intX += obj.offsetLeft;
		intY += obj.offsetTop;
		var obj = obj.offsetParent;
	} while(obj.tagName != "BODY" && obj.tagName != "HTML")
	return new Array(intX,intY);
}