function insertBBcode(openTag, closeTag) 
  { 
      comp = navigator.userAgent.toLowerCase(); 
      vers = parseInt(navigator.appVersion); 
      msie = ((comp.indexOf('msie') != -1) && (comp.indexOf('opera') == -1)); 
      nets = ((comp.indexOf('mozilla') != -1) && (comp.indexOf('spoofer') == -1) && (comp.indexOf('compatible') == -1) && (comp.indexOf('opera') == -1) && (comp.indexOf('webtv') == -1) && (comp.indexOf('hotjava') == -1)); 
      win  = ((comp.indexOf('win') != -1) || (comp.indexOf('16bit') != -1)); 
     
      if ((vers >= 4) && msie && win) 
      { 
          if (!document.selection.createRange().text) 
          { 
              document.form.text.focus(); 
              document.selection.createRange().duplicate().text = openTag + " " + closeTag; 

              return; 
          } 
          else 
          { 
              document.form.text.focus();             
              document.selection.createRange().text = openTag + document.selection.createRange().text + closeTag; 

              return; 
          } 

      } 
      else 
      { 
          document.form.text.value += openTag + " " + closeTag; 
          document.form.text.focus(); 
      } 
  }