var xmlHttp;

function addPage()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 }
 
 
var chars = document.getElementsByName("charcount");
var pid = chars.length;
//alert (pid);

var num = ++pid;
//alert (num);

var url="book-insert.php";
url=url+"?id="+pid;
url=url+"&nid="+num;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);

}


function removePage()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 }
 
 
var chars = document.getElementsByName("charcount");
var pid = chars.length;
//alert (pid);

var num = ++pid;
//alert (num);

var url="book-insert.php";
url=url+"?id="+pid;
url=url+"&nid="+num;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);

}

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("page").innerHTML = document.getElementById("page").innerHTML + xmlHttp.responseText;
 } 
}