var xmlHttp;
var id;

function getvalues(frmcal){

var rid=document.frmcal.hp.value;
id="txtResults";
var url="./include_calculator/get_values.php?id="+rid;
xmlHttp=GetXmlHttpObject(stateChanged);
xmlHttp.open("POST", url , true);
xmlHttp.send(null);

}


function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
var a
document.getElementById(id).innerHTML=xmlHttp.responseText ;
document.getElementById('ef_mt').innerHTML=document.getElementById('eff').value;
document.getElementById('power').innerHTML=document.getElementById('pf').value;
validateForm();
//alert(xmlHttp.responseText);
}
} 

function GetXmlHttpObject(handler){ 

var objXmlHttp=null;
if (navigator.userAgent.indexOf("Opera")>=0)
{
alert("This function doesn't work in Opera") ;
return ;
}

if (navigator.userAgent.indexOf("MSIE")>=0)
{ 
var strName="Msxml2.XMLHTTP";
if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
{
strName="Microsoft.XMLHTTP";
} 
try
{ 
objXmlHttp=new ActiveXObject(strName);
objXmlHttp.onreadystatechange=handler ;
return objXmlHttp;
} 
catch(e)
{ 
alert("Error. Scripting for ActiveX might be disabled");
return;
} 
} 
if (navigator.userAgent.indexOf("Mozilla")>=0)
{
objXmlHttp=new XMLHttpRequest();
objXmlHttp.onload=handler;
objXmlHttp.onerror=handler;
return objXmlHttp;
}
}