var totalRotations = arRotations.length/2;
function writeTheme() {
	var pageNumber, currIndex, name, text;
	currIndex = Math.floor(Math.random() * totalRotations);

	var i = currIndex * 2;
	name = arRotations[i];
	text = arRotations[i+1];

	document.write('<img src="images/themes/' + name + '_233x245.jpg" width="233" height="245" alt="'+ text +'" title="'+ text +'" border="0" />');
}