Grazie Var sicuramente sbaglio io, ma non mi funziona

<select name="select" onchange="this.form.select2.selectedIndex=this.sel ectedIndex;">
<option value="hjhjh">€100</option>
<option value="hjhjhjhjh">€200</option>
</select>
<select name="select">
<option value="hjhjh">opzione1</option>
<option value="hjhjhjhjh">opzione2</option>
</select>