var hTimer = null;
var hTimeout = 2500;
var oldRnd = 0;

preloadHeaders = function ( ) {
	for ( var i = 1; i < 4; i++ ) {
		var img1 = new Image;
		img1.src = '/skins/default/images/head'+i+'.jpg';
	}
}
preloadHeaders();

headerTextRandom = function ( ) {
	var rand = oldRnd+1;
	if ( rand > 3 ) rand = 1;

	var img1 = new Image;
	img1.src = '/skins/default/images/head'+rand+'.jpg';
	var bg = document.getElementById('head_animate_'+oldRnd);
	if ( bg ) {
		bg.setAttribute ( 'id', 'head_animate_'+rand );
		bg.style.backgroundImage = "url(/skins/default/images/head"+rand+".jpg)";
	}

	oldRnd = rand;
	hTimer = setTimeout ( 'headerTextRandom()', hTimeout );
}

window.onload = headerTextRandom;