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<input id="text1" type="text" />
<select id="name" name="name" orteus="true">
<option></option>
<option value="1">AAA</option>
</select>
window.onload = function() {
var input = document.getElementById('text1');
input.onkeyup = function() {
var select = document.getElementById('name');
for (var i = 0, count = select.options.length; i < count; i++) {
if (select.options[i].text == input.value) {
select.selectedIndex = i;
break;
}
}
}
}