var ajaxReQ = getXmlHttpRequestObject();
function getXmlHttpRequestObject() {
    if (window.XMLHttpRequest) {
    	return new XMLHttpRequest();
    } else if(window.ActiveXObject) {
    	return new ActiveXObject("Microsoft.XMLHTTP");
    } 
}

function get_delivery() {
	if (ajaxReQ.readyState == 4 || ajaxReQ.readyState == 0) {
		day = new Date();
		id = day.getTime();
		ajaxReQ.open("GET", 'includes/get-delivery.php?postcode='+document.getElementById("postcode").value+'&time='+id, true);
		ajaxReQ.onreadystatechange = ajaxdone; 
		ajaxReQ.send(null);
	}			
}

function ajaxdone() {
	if (ajaxReQ.readyState == 4) {
		if (ajaxReQ.responseText) {
			document.getElementById("delresult").innerHTML = ajaxReQ.responseText;
		}
	}
}