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  <head>
  <title>²âÊÔÊäÈë×Ö·û</title>
  <script language=javascript>  
  String.prototype.lenB =function(){
    return this.replace(/[^\x00-\xff]/g,"**").length;
  }  
  function  a(){
    var str=document.getElementById("content").value;
 if(str.length <= 180){
  abc.innerText="ÄúÒѾ­ÊäÈë"+str.length+"/180¸ö×Ö£¨Ã¿Ìõ¶ÌÐÅ×î¶à70¸ö×Ö£¬³¬¹ý·Ö¶àÌõ·¢ËÍ£©";
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   abc.innerText="×î¶àÖ»ÔÊÐíÊäÈë180¸ö×Ö¡£"
 }
  }
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  </head>
  <body>
  <textarea onpropertychange="if(value.length>80) value=value.substr(0,80)" id="content" onkeyup="a();"></textarea>
  <input maxlength="5"/>
  <p id="abc"></p>
  </body>
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function isIP(strIP) {
if (isNull(strIP)) return false;
var re=/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/g //Æ¥ÅäIPµØÖ·µÄÕýÔò±í´ïʽ
if(re.test(strIP))
{
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function SetCookie(name,value,expire) {
var exp = new Date();
exp.setTime(exp.getTime() + expire);
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