var xmlHttp
var b=0
function list()
{
xmlHttp=GetXmlHttpObject();
document.getElementById("list").innerHTML="<img src='images/loading.gif' width='10' height='10' > Loading.......";
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="booklist.php";
url=url+"?sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}
function stateChanged() 
{ 
if (xmlHttp.readyState==4)
document.getElementById("list").innerHTML=xmlHttp.responseText;
}

/////////////////
function showcont(str)
{
if (str.length==0)
  { 
  return;
  }
b=str;
document.getElementById("main").innerHTML="<img src='images/loading.gif' width='10' height='10' > Loading.......";  
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="contents.php";
url=url+"?id="+str;
url=url+"&sid="+Math.random();
///alert (url);
xmlHttp.onreadystatechange=stateChangedA;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 

function stateChangedA() 
{ 
if (xmlHttp.readyState==4)
document.getElementById("main").innerHTML=xmlHttp.responseText;
}
//////////////////////////
function sear(str,sel)
{
if (str.length==0)
  { 
  return;
  }
  xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
document.getElementById("main").innerHTML="<img src='images/loading.gif' width='10' height='10' > Loading.......";    
var url="contents.php";
url=url+"?ser="+str;
url=url+"&id="+b;
url=url+"&se="+sel;
url=url+"&sid="+Math.random();
//alert (url);
xmlHttp.onreadystatechange=stateChangedS;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 

function stateChangedS() 
{ 
if (xmlHttp.readyState==4)
document.getElementById("main").innerHTML=xmlHttp.responseText;
}
//////////////////
function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}