function AjaxFunction(email)
{
	var httpxml;
	try
	{
		// Firefox, Opera 8.0+, Safari
		httpxml=new XMLHttpRequest();
	}
	catch (e)
	{
	// Internet Explorer
		try
		{
			httpxml=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				httpxml=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				alert("Your browser does not support AJAX!");
				return false;
			}
        }
     }
	 
function stateck()
{
	if(httpxml.readyState==4)
	{
		document.getElementById("txtHint").innerHTML=httpxml.responseText;
		var t = isValidEmail(email);
		if(t==false){document.booking.submit.disabled=true;}
		if(t==true) {document.booking.submit.disabled=false;}
	
	}
}
	var url="email-ajax.php";
	url=url+"?email="+email;
	url=url+"&sid="+Math.random();
	httpxml.onreadystatechange=stateck;
	httpxml.open("GET",url,true);
	httpxml.send(null);
}


function isValidEmail(str) {

   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);

}