function addsmiley(symbol) 
	{
		var textvak = document.getElementById('textvak');
		
  	    textvak.value += symbol;
  		textvak.focus();
	} 
			
      function bb(openen, sluiten) 
      { 
          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)); 

	var textvak = document.getElementById('textvak');

          if ((vers >= 4) && msie && win) 
          { 
              selectie = document.selection.createRange().text; 
              if (!selectie) 
              {
                  textvak.value += openen + " " + sluiten; 
                  textvak.focus(); 
                  return; 
              } 
              else 
              { 
                  document.selection.createRange().text = openen + selectie + sluiten; 
                  textvak.focus(); 
                  return; 
              } 

              if (textvak.createTextRange) 
              textvak.caretPos = document.selection.createRange().duplicate(); 
          } 
          else 
          { 
              textvak.value += openen + " " + sluiten; 
              textvak.focus(); 
          } 
      }