createTextRange問題

Question

Applies To BODY, BUTTON, INPUT type=button, INPUT type=hidden, INPUT type=password, INPUT type=reset, INPUT type=submit, INPUT type=text, TEXTAREA try code like this:<SCRIPT LANGUAGE="JavaScript">
<!--function zhiSelect(obj){
var r = document.selection.createRange();
r.moveToElementText(obj);
r.moveToPoint(event.x, event.y);
r.expand("word");
r.select();
}//-->
</SCRIPT>
<span id = "dictz_status" onmousemove="zhiSelect(this)">
但我想把它轉為..............
</span>