function heroRandom() {
	// create an array of bgs
	var i = new Array();
	var j = -1;
		i[j++] = "hero_home_01.jpg";
		i[j++] = "hero_home_02.jpg";
		i[j++] = "hero_home_03.jpg";
		i[j++] = "hero_home_04.jpg";
		i[j++] = "hero_home_05.jpg";
		//i[j++] = "hero_home_06.jpg";
	
	var bglen = i.length;
	
	// get a random number between 0 and the number of bgs available
	var bgnum = Math.round(Math.random() * bglen) - 1;
	
	// some roopies
	while  (bgnum < 0 || bgnum > bglen) bgnum = Math.round(Math.random() * bglen) -1;
		if (document.getElementById('content-main-inner')) {
			document.getElementById('content-main-inner').style.backgroundImage = "url(images/heros/" + i[bgnum] + ")";
			document.getElementById('content-main-inner').style.backgroundRepeat = "no-repeat";
		}
}