<HTML>
<HEAD>
</HEAD>
<script>
function ck(objName,sourceIndex,targetIndex){
var text1,text2,value1,value2;
text1=objName.options[sourceIndex].text;
value1=objName.options[sourceIndex].value;
text2=objName.options[targetIndex].text;
value2=objName.options[targetIndex].value;
objName.options[sourceIndex]=newOption(text2,value2);
objName.options[targetIndex]=newOption(text1,value1);
}
</script>
<BODY>
<formname=form1>
<select name=sele multiple>
<option value=1>1</option>
<option value=2>2</option>
<option value=3>3</option>
<option value=4>4</option>
</select>
<buttononclick="ck(document.form1.sele,3,2);"> change order</button>
</form>
</BODY>
</HTML>