如何把文本框的焦点定在文本框的文字之后。

我想在textarea中初定一些文字,当Mouse onlick这个文本框时,焦点落在文字之后,而不是落在文本框之前!
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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" onfocus="cc()" type="text" value="123"/>

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1<input onfocus="sel(this)" value="abcdefghijklmnopqrst"/>
1<script language="javascript">   
2function sel(obj)   
3{   
4var rng=obj.createTextRange()   
5rng.setEndPoint("StartToEnd", rng);   
6rng.select();   
7}   
8</script>
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