var xmlHttp;

var em = "";

function createXMLHttpRequest() 
{
    if (window.ActiveXObject) 
    {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if (window.XMLHttpRequest) 
    {
        xmlHttp = new XMLHttpRequest();
    }
}


function availemail()
{
    createXMLHttpRequest();   
    em = document.getElementById('Email').value;
    var url = "emailavailable.php?email=" +em;   
    //alert(url);
    xmlHttp.open("GET",url,true);
    xmlHttp.onreadystatechange = callback;
    xmlHttp.send(null);
}

function availemail1()
{
    createXMLHttpRequest();   
    em = document.getElementById('EMail').value;
    var url = "emailavailable1.php?email=" +em;   
    //alert(url);
    xmlHttp.open("GET",url,true);
    xmlHttp.onreadystatechange = callback1;
    xmlHttp.send(null);
}

function callback() 
{   
	//alert(xmlHttp.readyState);
    if (xmlHttp.readyState == 4) 
    {
    	//alert(xmlHttp.status);
        if (xmlHttp.status == 200) 
        {            
           var r = xmlHttp.responseText;            
           if(r!=0)
           {
           		var text = em + " already exist in our database.";
           		document.getElementById('emailavail').style.display="";
           		document.getElementById('emailavail').innerHTML = text;
           		document.getElementById('Email').value = "";
           }
        }
    }
}

function callback1() 
{   
	//alert(xmlHttp.readyState);
    if (xmlHttp.readyState == 4) 
    {
    	//alert(xmlHttp.status);
        if (xmlHttp.status == 200) 
        {            
           var r = xmlHttp.responseText; 
           //alert(xmlHttp.responseText);
           if(r!=0)
           {
           		var text = em + " already exist in our database.";
           		document.getElementById('emailavail').style.display="";
           		document.getElementById('emailavail').innerHTML = text;
           		document.getElementById('Email').value = "";
           }
        }
    }
}