MODx Revo Custom Input Type with two fields(textfield and dropdown)

gistfile1.tpl

<input id="tv{$tv->id}" name="tv{$tv->id}"
	type="text" class="textfield"
	value="{$tv->get('value')|escape}"
	{$style}
	tvtype="{$tv->type}"
/>

<select id="tv{$tv->id}" name="tv{$tv->id}">
{foreach from=$tvitems item=item}
	<option value="{$item.value}" {if $item.selected} selected="selected"{/if}>{$item.text}</option>
{/foreach}
</select>

<script type="text/javascript">
// <![CDATA[
{literal}
var fld = MODx.load({
{/literal}
    xtype: 'textfield'
    ,applyTo: 'tv{$tv->id}'
    ,width: '97%'
    ,enableKeyEvents: true
{literal}
    ,listeners: { 'keydown': { fn:MODx.fireResourceFormChange, scope:this}}
});
MODx.makeDroppable(fld);
{/literal}

{literal}

MODx.load({
{/literal}
	xtype: 'combo'
	,transform: 'tv{$tv->id}'
	,id: 'tv{$tv->id}'
	,triggerAction: 'all'
	,typeAhead: false
	,editable: false
	,width: '97%'
{literal}
	,listeners: { 'select': { fn:MODx.fireResourceFormChange, scope:this}}
});
{/literal}
// ]]>
</script>