var map;
    var gdir;
    var geocoder = null;
    var addressMarker;
    
    function initilize() {
      if (GBrowserIsCompatible()) {      
        map = new GMap2(document.getElementById("map_canvas"));
        gdir = new GDirections(map, document.getElementById("directions"));
        GEvent.addListener(gdir, "load", onGDirectionsLoad);
        GEvent.addListener(gdir, "error", handleErrors);
    
        //setDirections("San Francisco", "Mountain View", "en_US");
      }
    }
    
    function setDirections(fromAddress, toAddress, locale) {
      gdir.load("from: " + fromAddress + " to: " + toAddress,
                { "locale": locale });
    }
    
    function handleErrors(){
     if (gdir.getStatus().code == G_GEO_UNKNOWN_ADDRESS)
       alert("Please enter a valid shipping zip code.\nError code: " + gdir.getStatus().code);
     else if (gdir.getStatus().code == G_GEO_SERVER_ERROR)
       alert("A geocoding or directions request could not be successfully processed, yet the exact reason for the failure is not known.\n Error code: " + gdir.getStatus().code);
     
     else if (gdir.getStatus().code == G_GEO_MISSING_QUERY)
       alert("Please enter a zip code.\n Error code: " + gdir.getStatus().code);
    
    //   else if (gdir.getStatus().code == G_UNAVAILABLE_ADDRESS)  <--- Doc bug... this is either not defined, or Doc is wrong
    //     alert("The geocode for the given address or the route for the given directions query cannot be returned due to legal or contractual reasons.\n Error code: " + gdir.getStatus().code);
       
     else if (gdir.getStatus().code == G_GEO_BAD_KEY)
       alert("The given key is either invalid or does not match the domain for which it was given. \n Error code: " + gdir.getStatus().code);
    
     else if (gdir.getStatus().code == G_GEO_BAD_REQUEST)
       alert("A directions request could not be successfully parsed.\n Error code: " + gdir.getStatus().code);
      
     else alert("An unknown error occurred.");
    }
    
    function onGDirectionsLoad(){
        // Use this function to access information about the latest load()
        // results.
    
var totalmeters = gdir.getDistance().meters;
var milestometers = 1609.344;
var totalmiles = totalmeters / milestometers;

var ajaxRequest;  // The variable that makes Ajax possible!
	
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				// Something went wrong
				alert("Your browser broke!");
				return false;
			}
		}
	}
	// Create a function that will receive data sent from the server
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			var ajaxDisplay = document.getElementById('shippingtotaldiv');
			ajaxDisplay.innerHTML = ajaxRequest.responseText;

		carttotal();
		}
	}
	
		var queryString = "?miles=" + totalmiles;
	ajaxRequest.open("GET", "scripts/calcshipping.php" + queryString, true);
	ajaxRequest.send(null); 

    }
	function calcshipping() {
		
		var orginaddress = "887 Brittany Rd, Encinitas, CA 92024";
			var testaddress = "92021";
	var destination = document.getElementById('destzipcode').value;
	
	setDirections(orginaddress, destination, "en_US");
	}