var xmlHttp

//----------------------------------- Calculator
function calculate(str,str2)
{

var octet=str.split(".");
	var i=3;
	while(i >= 0)
	{
	octet[i] = parseInt(octet[i]);
		if ((/[^0-9]/g.test(octet[i])) || octet[i] > '255') {
		alert(octet[i] + ' : Network address should be in the form of X.X.X.X where X is a positive integer between 0-255');
		form.networkadd.focus();
		return false;
		}
	i -= 1;
	}
	
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="./calculator.php"
url=url+"?p="+str
url=url+"&q="+str2
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged2
xmlHttp.open("GET",url,true)
xmlHttp.send(null)

}
function stateChanged2()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {
 document.getElementById("mask").innerHTML=xmlHttp.responseText
 }
}
//------------------------------------------SITE Subnet------------------

function sitesub(str)
{
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="../sitesub.php"
url=url+"?p="+str
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("ajaxreturn").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;
}