| 内容 | <script language=javascript>
 function selectall() //全选
 {
 var arrobj = document.all;
 for(var i = 0; i < arrobj.length;i++)
 {
 if(typeof arrobj[i].type != undefined && arrobj[i].type=='checkbox') arrobj[i].checked =true;
 }
 }
 function unselectall() //全不选
 {
 var arrobj = document.all;
 for(var i = 0; i < arrobj.length;i++)
 {
 if(typeof arrobj[i].type != undefined && arrobj[i].type=='checkbox') arrobj[i].checked =false;
 }
 }
 </script>
 
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