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<SCRIPT LANGUAGE="JavaScript">
<!--
function limitNum(obj) {
if(obj.value.replace(/\s/g,"")==""||obj.value.replace(/\s/g,"")=="ÊäÈë¹Ø¼ü×Ö")  {
  alert('ÇëÊäÈë¹Ø¼ü×Ö')
      return false;
}
}
//-->
</SCRIPT> 
   <form action="123.p" method="post" name="form1" id="form1" onSubmit="return limitNum(searchKeyword)">
                <select name="searchContent" style='font-size:9pt;'>
                  <option value="newsAll">·¢´óË®</option>
                  <option value="title">·¢Éú</option>
                  <option value="author">·¢</option>
                  <option value="content">·¢</option>
                </select>
                <input type="text" name="searchKeyword" value="ÊäÈë¹Ø¼ü×Ö" onFocus="this.value=''" style='font-size:9pt;' size="9" maxlength="50" />
                <input type="submit" name="submit" value="·½·¨" />
            </form>


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    if (e.type != 'mouseout' && e.type != 'mouseover ......

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       <menu>
         <menu name="Ã÷ ......

JavaScript ÓÃÓÚģʽƥÅäµÄ RegExp ·½·¨

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javascript²Ù×÷Cookies

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function setCookie(name,value)
{
  var Days = 1; //´Ë cookie ½«±»±£´æ 1 Ìì
  var exp  = new Date();    //new Date("December 31, 9998");
  exp.setTime(exp.getTime() + Days*24*60*60*1000);
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<html  onclick=”handleClick()”>
<head></head>
<body onclick=”handleClick()”>
  <div ......
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