var colors = new Array('#00FF00', '#0000FF', '#FF0000', '#FFFF00', '#FF00FF');

function test(name, num) {
	elem = document.getElementById(name)
	if (num >= colors.length) {
		num = 0
	}
	elem.style.backgroundColor = colors[num];
	
	setTimeout('test(\''+name+'\', '+(num+1)+')',10000);
}

setTimeout('test(\'topbarleft\',0)',5000);
setTimeout('test(\'topbarright\',3)',10000);