function tour(dv) {

	var div, lst, i, id, id2, ob;

	ob = null;

	id2 = dv.split('-');

	if((div = document.getElementById('tour'))){
		if((lst = div.getElementsByTagName('div'))){
			for(i=0; i < lst.length; i++){
				id = lst[i].id.split('-');
				if(id.length < id2.length) continue;
				if(id.length > id2.length){
					if(id[1] == id2[1]){
						if(ob == null) ob = lst[i];
					}
				}
				if(id[0] == 'tour'){
					lst[i].className= "oculto";
				}
			}
		}
	}
	if (document.getElementById(dv).className == "oculto") {
	   document.getElementById(dv).className= "";
	}
	if(ob != null) ob.className = "";
}