Forum-VN

<script type="text/javascript">
  function tag(text1,text2){
    if((document.selection)){
      document.form.msg.focus();
      document.form.document.selection.createRange().text = text1+document.form.document.selection.createRange().text+text2
    }else if(document.forms['form'].elements['msg'].selectionStart!=undefined){
      var element=document.forms['form'].elements['msg'];
      var str=element.value;
      var start=element.selectionStart;
      var length=element.selectionEnd-element.selectionStart;
      element.value=str.substr(0,start)+text1+str.substr(start,length)+text2+str.substr(start+length)
    }else{
      document.form.msg.value+=text1+text2
    }
  };
  function show_hide(a){
    b=document.getElementById(a);
    if(b.style.display=="none"){
      b.style.display="block"
    }else{
      b.style.display="none"
    }
  }
</script>

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