When this is form is submit by the onchange event it is not keeping the get variable view. Any ideas why this might be happening? On submit this is the url it goes to, index?month=February&year=2014
<form action="index?view=list" class="pure-form pure-form-aligned" style="margin:20px;">
    <select name="month" onchange="this.form.submit();">
    <option value="January">January</option>
    <option value="February">February</option>
    </select>
    <select name="year" onchange="this.form.submit();">
    <option value="2014">2014</option>
    <option value="2013">2013</option>
    <option value="2012">2012</option>
    </select>
</form>
 
    