var xmlHttp

function doComments()
{ 
if (
document.forms[0].email.value == ""||
document.forms[0].name.value == "" ||
document.forms[0].comment.value == ""||
document.forms[0].ean.value == ""||
document.forms[0].isbn.value == "" ||
document.forms[0].title.value == ""||
document.forms[0].rating.value == ""
)

{
document.getElementById('formerror').style.display="inline";
}
else
{

var stremail = document.forms[0].email.value;
var strean = document.forms[0].ean.value;
var strisbn = document.forms[0].isbn.value;
var strtitle = document.forms[0].title.value;
var strname =  document.forms[0].name.value;
var strcomment = document.forms[0].comment.value;
var strrating =  document.forms[0].rating.value;

  //alert ("doComments initiated!");
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser must support AJAX to use this feature!");
  return;
  } 
var url="insertcomment.asp";
url=url+"?email="+stremail;
url=url+"&ean="+strean;
url=url+"&isbn="+strisbn;
url=url+"&title="+strtitle;
url=url+"&name="+strname;
url=url+"&comment="+strcomment;
url=url+"&rating="+strrating;
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);

document.forms[0].email.value = ""
document.forms[0].name.value = "" 
document.forms[0].comment.value = ""
document.forms[0].ean.value = ""
document.forms[0].isbn.value = "" 
document.forms[0].name.value = ""
document.forms[0].title.value = ""
document.forms[0].rating.value = "3"

}
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{ 
  //alert ("Good!");

document.getElementById("commentsresponse").innerHTML=xmlHttp.responseText;
dofade();
}
if (xmlHttp.readyState==0){
  document.getElementById("commentsresponse").innerHTML="Sorry, an error occured!";
}
}

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;
}