function hm_swap(image, over) {
	if (over) {
		document.images[image].src = document.images[image].src.replace(/_off/gi, '_over');
		document.images['rollover'].src = '/img/hm_rollover_' + image + '.jpg';
	} else {
		document.images[image].src = document.images[image].src.replace(/_over/gi, '_off');
		document.images['rollover'].src = '/img/hm_rollover_off.jpg';
	}
}

function preloadimages(imagesstring){
 var imagesarray;
 var count;
 imagesarray=imagesstring.split(",");
 for(count=0;count<imagesarray.length;count++){
  newimage=new Image();
  newimage.src=imagesarray[count];
 }
}