JS Unicode Encode/Decode SRC V3

<center>
<body bgcolor="lightblue">
Text To Encode/Decode In The Unicode Format:<p>
<b>
<input ondblclick="this.value='';" style="width:220;color:darkred; background:skyblue" id="t" value="Text To Encode/Decode In Unicode Format" ></input><p>
<button style="width:105" onclick="script:
var rr=t.value;
document.body.innerHTML=document.body.innerHTML+(encodeURIComponent('<center>'+rr+'<p>'));
"><b><font color=darkgreen>Encode</button>
<button  style="width:105" onclick="script:
var rr=t.value;
document.body.innerHTML=document.body.innerHTML+(decodeURIComponent('<center>'+rr+'<p>'));
"><b><font color=darkgreen>Decode</button>
<button  style="width:105" onclick="script:t.value=null;"
font color=darkgreen>Clear</button>
<p>
<script>