function changeTipo(){
	for (var i=buscarForm.precios.options.length; i>0; i--){		
		buscarForm.precios.remove(i);
	}
		
	switch (buscarForm.tipo.value){
		case 'compra': {			
			var myopt = document.createElement("option")
			myopt.value='-200000';
			myopt.text='menos de 200.000';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='200000-400000';
			myopt.text='entre 200.000 y 400.000';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='400000-600000';
			myopt.text='entre 400.000 y 600.000';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='600000-1000000';
			myopt.text='entre 600.000 y 100.0000';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='+1000000';
			myopt.text='mas de 1.000.000';
			buscarForm.precios.add(myopt);
		}
		break;
		case 'alquiler': {
			var myopt = document.createElement("option")
			myopt.value='-500';
			myopt.text='menos de 500';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='500-800';
			myopt.text='entre 500 y 800';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='800-1200';
			myopt.text='entre 800 y 1.200';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='1200-2000';
			myopt.text='entre 1.200 y 2.000';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='2000-3000';
			myopt.text='entre 2.000 y 3.000';
			buscarForm.precios.add(myopt);
			var myopt = document.createElement("option")
			myopt.value='+3000';
			myopt.text='mas de 3.000';
			buscarForm.precios.add(myopt);
		}
		break;
		default: {
		
		}
		break;
	}
}

function getPrecio(){
var valor=buscarForm.precios.value;
	buscarForm.desde_precio.value='';
	buscarForm.hasta_precio.value='';
	if (valor.substring(0,1)=='-') {
	// Menor que:
		buscarForm.desde_precio.value = '';
		buscarForm.hasta_precio.value = valor.substring(1,valor.length - 1);		
	}
	if (valor.substring(0,1)=='+') {
	// Mayor que:
		buscarForm.desde_precio.value = valor.substring(1,valor.length - 1);
		buscarForm.hasta_precio.value = '';
	}
	if (valor.indexOf('-')>0 && valor.substring(0,1) != '-') {
	// Entre:
		buscarForm.desde_precio.value = valor.substring(0,valor.indexOf('-'));
		buscarForm.hasta_precio.value = valor.substring(valor.indexOf('-')+1,valor.length);
	}

}