function overlay(element) {
	el = document.getElementById(element);
	el.style.visibility = (el.style.visibility == "visible") ? "hidden" : "visible";
}

function calcular() {
  document.formulario.cuota.value=""
  if ((document.formulario.importe.value!="")&&(document.formulario.duracion.value!="")&&(document.formulario.interes.value!="")){
    n=document.formulario.duracion.value
        c=document.formulario.importe.value
        i=document.formulario.interes.value
        if (navigator.appName=='Netscape') {
          tmp=new Array('12','4','2','1')
          p=parseFloat(12)
        } else {
          p=parseFloat(12)
        }
        if (i!=0){
          c1=i/(100*p)
          c2=n*p
          c3=Math.pow(1+c1,c2)
          c4=c3/(c3-1)
          a=c*c1*c4
        } else{
          a= c/(p*n)
        }
        document.formulario.cuota.value=Math.round(a)
  }
  return false;
}
  function cambia_alquiler() {
   $('selectprecio').replace('<p class="campobusc" id="selectprecio"><label for="zona" class="buscador_label">Precio alquiler</label><br /> <select name="price" size="10" id="selprice"> <option value="0" selected="selected">Todos</option> <option value="1">1-600&#8364; </option><option value="2">601-1000&#8364; </option><option value="3">1001-1500&#8364; </option><option value="2">M&#225;s de 1500&#8364;</option></select></p>');
   new Effect.Highlight('selectprecio');
  }
  function cambia_venta() {
    $('selectprecio').replace(' <p id="selectprecio" class="campobusc"> <label for="zona" class="buscador_label">Precio venta</label><br /> <select name="price" size="10" id="selprice"> <option value="0" selected="selected">Todos</option> <option value="1">180.000 &euro; (0-30 Mill.pts.)</option> <option value="2">180.001-240.000&euro; (30-40 Mill.pts.)</option> <option value="3">240.001-300.000&euro; (40-50 Mill.pts.)</option> <option value="4">300.001-420.000&euro; (50-70 Mill.pts.)</option> <option value="5">420.000&euro; (M&aacute;s de 70 Mill.pts.)</option></select> </p> ');
   new Effect.Highlight('selectprecio');
  }
  function cambia_alquiler_home() {
   $('selectprecio').replace('<p class="fila_input" id="selectprecio"><label for="zona" class="buscador_label">Precio</label><select name="price" id="selprice"> <option value="0" selected="selected">Todos</option> <option value="1">1-600&#8364; </option><option value="2">601-1000&#8364; </option><option value="3">1001-1500&#8364; </option><option value="2">M&#225;s de 1500&#8364;</option></select></p>');
   new Effect.Highlight('selectprecio');
  }
  function cambia_venta_home() {
    $('selectprecio').replace(' <p id="selectprecio" class="fila_input"> <label for="zona" class="buscador_label">Precio</label><select name="price" id="selprice"> <option value="0" selected="selected">Todos</option> <option value="1">180.000 &euro; (0-30 Mill.pts.)</option> <option value="2">180.001-240.000&euro; (30-40 Mill.pts.)</option> <option value="3">240.001-300.000&euro; (40-50 Mill.pts.)</option> <option value="4">300.001-420.000&euro; (50-70 Mill.pts.)</option> <option value="5">420.000&euro; (M&aacute;s de 70 Mill.pts.)</option></select> </p> ');
   new Effect.Highlight('selectprecio');
  }