then all 16-bit units to the end of the data 
   are replaced; (i.e., the effect is the same as a <code>remove</code>
    method call with the same range, followed by an <code>append</code>
    method invocation).<DD><CODE>arg</CODE> - The <code>DOMString</code> with which the range must be 
   replaced.<DT><B>Throws:</B><DD><CODE><A HREF="../../../org/w3c/dom/DOMException.html">DOMException</A></CODE> - INDEX_SIZE_ERR: Raised if the specified <code>offset</code> is 
   negative or greater than the number o