[code] 


<textarea id="code" name="code" cols=80 rows=30 id=code> 


</textarea> 

<input type=button οnclick=encode(code,this) value="encode"> <input type=button οnclick=decode(code,this) value="decode"> 

<script> 

function encode(obj,btn) 

{ 

 obj.value=obj.value.replace(/[^\u0000-\u00FF]/g,function($0){return escape($0).replace(/(%u)(\w{4})/gi,"\\u$2")}); 

 window.clipboardData.setData("Text",obj.value); 

} 


function decode(obj,btn) 

{ 

 obj.value=unescape(obj.value.replace(/\\u/g,'%u').replace(/;/g,'')); 

} 

</script> 

[/code]