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<html>
<head>
<script type="text/javascript">
function put(){
option=document.forms[0].dropdown.options[document.forms[0].dropdown.selectedIndex].text
txt=document.forms[0].number.value
txt=txt + option
document.forms[0].number.value=txt
}
</script>
</head>
<body>
<form>
Select numbers:<br>
<select name="dropdown">
<option>0</option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
</select>
<input type="button" onclick="put()" value=">>>">
<input type="text" name="number" size="20">
</form>
</body>
</html>
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