input获得焦点后自动移动到最后?

1<body>
2<form name="form1">
3<input name="temp" value="asdfsadF"/>
4</form>
5<script language="javascript">   
6form1.temp2_1.focus();   
7</script>
8</body>

请问当temp获得焦点后如何让光标停在F(temp值是asdfsadF,如何让光标停在最后)后面?
在线等待,50分!
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 1<script language="javascript">   
 2function cc()   
 3{   
 4var e = event.srcElement;   
 5var r =e.createTextRange();   
 6r.moveStart('character',e.value.length);   
 7r.collapse(true);   
 8r.select();   
 9}   
10</script>
1<input name="temp" onfocus="cc()" value="asdfsadF"/>

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 1<script language="javascript">   
 2function cc()   
 3{   
 4var e = event.srcElement;   
 5var r =e.createTextRange();   
 6r.moveStart('character',e.value.length);   
 7r.collapse(true);   
 8r.select();   
 9}   
10</script>
1<input name="text1" onclick="cc()" type="text" value="123"/>
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