JavaSCript Window Location and History Property

 code:
<script language="javascript">
var url = window.location.protocol;
alert(url);
function fwd(){
window.history.forward();

}
</script>

<a href="nxt.html">Page</a>

<br />

<input type="button" value="Next" onclick="fwd()" />

nxt.html:

<script language="javascript">
function prv(){
window.history.back();
}

</script>



<input type="button" value="Previous Page" onClick="prv()" />