var http = false;

if(navigator.appName == "Microsoft Internet Explorer") {
  http = new ActiveXObject("Microsoft.XMLHTTP");
} else {
  http = new XMLHttpRequest();
}

function suggest(){
    var name = document.getElementById("name").value;
    var email = document.getElementById("email").value;
    var suggestion = document.getElementById("suggestion").value;
    http.abort();
		http.open("GET", "php/submit.php?name=" + name + "&email=" + email + "&suggestion=" + suggestion, true);
		http.onreadystatechange=function() {
			if(http.readyState == 4) {
			document.getElementById("suggest").innerHTML = http.responseText;
			}
		}
		http.send(null);
}