var des;


function showPrice(academic_level,writing_level,delivery_mode)
{
des=GetXmlHttpObject();
if (des==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url="getprice.php";
url=url+"?academic_id="+academic_level;
url=url+"&writing_id="+writing_level;
url=url+"&delivery_id="+delivery_mode;
url=url+"&sid="+Math.random();
des.onreadystatechange=stateChanged;
des.open("GET",url,true);
des.send(null);
}



function stateChanged()
{
if (des.readyState==4)
{
document.getElementById("txtHint").innerHTML=des.responseText;
}else{
	document.getElementById("txtHint").innerHTML = "Please Wait";
}

}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}