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function  setEnd(field)   {  
      if (field.createTextRange) {  
          var r = field.createTextRange();  
          r.moveStart('character', field.value.length);  
          r.collapse();  
          r.select();  
      }  
  }
<INPUT   TYPE="text"   name="userName"   value="²âÊÔ"  onfocus="setEnd(this)">   
 <INPUT   TYPE="text"  name="userAge"   value="²âÊÔ"  onfocus="setEnd(this)">


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function getScrollTop()
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    {
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<a href="javascript:void(0);" ><img id="SubmitFeedback" src="/images/comment_btn.gif" /></a>
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$(document).ready(function() {
alert("Ò³ÃæË¢ÐÂ");
$("#SubmitFeedback").bind("click", Test);
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