function update_big_image(big_id,id_num,url) {

	var old_big = $('bigimage').src;
	new Ajax.Updater(big_id,'../../../store/store-functions.php?size=big&url='+url,{asynchronous:true});

	new Ajax.Updater('spot'+id_num,'../../../store/store-functions.php?num='+id_num+'&url='+old_big,{asynchronous:true});
}