// JavaScript Document
<!-- AJAX functions
function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sndReq(action,arg1,arg2,arg3) {
    http.open('get', '/class/ajax_handler.php?action='+action+'&arg1='+arg1+'&arg2='+arg2+'&arg3='+arg3);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function handleResponse() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();

        if(response.indexOf('|' != -1)) {
            update = response.split('|');
            document.getElementById(update[0]).innerHTML = update[1];
        }
    }
}
// other (non AJAX) functions below
function changeDoorType() {
	var list = document.getElementById('door_type');
	var listValue = list.options[list.selectedIndex].value;
	if (listValue == "Up and over door"){
		//alert("Door type is up and over");
		document.getElementById('up_and_over').style.visibility = "visible";
		//document.getElementById('Layer3').style.visibility = "hidden";
		}else{
		document.getElementById('up_and_over').style.visibility = "hidden";
		//document.getElementById('Layer3').style.visibility = "visible"; 
		}	
}

function MM_popupMsg(msg) { //v1.0
  alert(msg);
}
function updateDeliveryCharge() {
	MM_popupMsg('Updating delivery charge');
}