Tekst hopper ind i tekst-boks

Kode 

<script type="text/javascript">
	function insert(text){
		document.getElementById("myText").value += text
	}
</script>

<textarea id="myText"></textarea>
<input type="button" onclick="insert(':)');" value=":)" />

JScript kode 

 function insertAtCursor(myField, myValue) 
 {
     if (document.selection)
     {
         myField.focus();
         sel = document.selection.createRange();
         sel.text = myValue;
     }
     else
         if (myField.selectionStart || myField.selectionStart == '0')
         {
             var startPos = myField.selectionStart;
             var endPos = myField.selectionEnd;
             myField.value = myField.value.substring(0, startPos) + myValue + myField.value.substring(endPos, myField.value.length);
         }
         else
         {
             myField.value += myValue;
         }
 }

Kode 

<script type="text/javascript">
	function insert(text){
		document.getElementById("dit").value += text
	}
</script>

<input type="button" onclick="insert('<b> <?php print $dit; ?> t</b>');" value="<b>" />