How to embed a Google Map in your website contact page?

<div id="map-canvas">
 <div id=map1 style="height:400px"></div>
</div>

<style>
 #map-canvas img{max-width:none}
</style>

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false">
</script>

<script type="text/javascript">
<!--
var map;
var markers = new Array();
var infos = new Array();
var polylines = new Array();
var geoMarker = null;
var geoInfo = null;
var lat = 22.80270609254608;
var lng = 86.12269929447745;

function initialize()
{
    var latlng = new google.maps.LatLng(lat,lng);
    var mapTypeControlOptions = {
        mapTypeIds: [ google.maps.MapTypeId.HYBRID, 
		      google.maps.MapTypeId.ROADMAP, 
		      google.maps.MapTypeId.SATELLITE, 
		      google.maps.MapTypeId.TERRAIN],
        position: google.maps.ControlPosition.RIGHT_TOP,
        style: google.maps.MapTypeControlStyle.DEFAULT
    };
    var overviewMapControlOptions = { opened: false };
    var panControlOptions = { position: google.maps.ControlPosition.LEFT_TOP };
    var rotateControlOptions = { position: google.maps.ControlPosition.LEFT_TOP };
    var scaleControlOptions = { position: google.maps.ControlPosition.LEFT_BOTTOM, 
			    style: google.maps.ScaleControlStyle.DEFAULT };
    var zoomControlOptions = { position: google.maps.ControlPosition.LEFT_TOP, 
			    style: google.maps.ZoomControlStyle.DEFAULT };
    var myOptions = {
        mapTypeControlOptions: mapTypeControlOptions,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        overviewMapControlOptions: overviewMapControlOptions,
        panControlOptions: panControlOptions,
        rotateControlOptions: rotateControlOptions,
        scaleControlOptions: scaleControlOptions,
        zoom: 16,
        zoomControlOptions: zoomControlOptions,
        center: latlng
    };
    map = new google.maps.Map(document.getElementById("map1"), myOptions);
    markers[0] = new google.maps.Marker({
        title: "Our Office Location",
        position: new google.maps.LatLng(lat,lng),
        map: map
    });
    infos[0] = null;
	if (typeof mbOnAfterInit == "function") mbOnAfterInit(map);
}
window.onload = initialize;
//-->
</script>