function clearCities() {
  	var cities=document.getElementById("geo_city_id") 
	for (i=cities.options.length-1;i>0;i--) 
  		cities.options[i]=null 
		cities.options[0]=new Option("No importa","0")
		document.getElementById("geo_city_id").options[0].selected=true;
}

function buscar() {
 document.searchform.submit(); 
}