function subscribe(){

if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
}else{// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}

var newletter_email=document.getElementById('newletter_email').value;

if(newletter_email=="" || newletter_email=="Enter your email"){
	
document.getElementById('ajax_msg').innerHTML="<strong style='color:#FF0000'>Please enter email address</strog>";

}else{

var url="newsletter_signup.php?newletter_email="+newletter_email;
xmlhttp.open("GET",url,false);
xmlhttp.send(null);
document.getElementById('ajax_msg').innerHTML=xmlhttp.responseText;

}


}