function validate(){
if (document.form.site.selectedIndex > 0){
       location.href = document.form.site.options[document.form.site.selectedIndex].value;
     }
  }
//document.write('<form name="form">');
document.write('<select name="site" onChange="validate();" class="formtext">');
document.write('<option value="">-- Select a Tour --');
document.write('<option value="siena_south.htm">Tuscany in Italy: South of Siena');
document.write('<option value="siena_north.htm">Tuscany in Italy: Northwest of Siena');
document.write('<option value="provence.htm">Provence in France: East of Avignon');
document.write('</select>');
//document.write('</form>');