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function limitNum(obj) {
if(obj.value.replace(/\s/g,"")==""||obj.value.replace(/\s/g,"")=="ÊäÈë¹Ø¼ü×Ö")  {
  alert('ÇëÊäÈë¹Ø¼ü×Ö')
      return false;
}
}
//-->
</SCRIPT> 
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                  <option value="newsAll">·¢´óË®</option>
                  <option value="title">·¢Éú</option>
                  <option value="author">·¢</option>
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                <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·¨" />
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name:"leo",
intro:function(){
alert("my name is "+this.name);
}
}
var teacher=function(f){
f();
}
teacher(student.intro); 
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