function checkCallBack(namefield, phonefield) {
   
    namevalue = namefield.value;
    phonevalue = phonefield.value;

    if (namevalue != '' && namevalue != 'Name...' && phonevalue != '' && phonevalue != 'Phone...') {
        return true
    }
    else {
        alert('Please enter your name and your phone number.');
        return false
    }
}

var showMap = function(lat,lng, zoom){
    var mapDiv = document.getElementById("googleMap");
    if(typeof google !== "undefined" && typeof mapDiv !== "undefined") {
	    var myOptions = {
		    zoom: zoom,
		    center: new google.maps.LatLng(lat,lng),
		    mapTypeId: google.maps.MapTypeId.ROADMAP,
		    scrollwheel:false
	    },
	    shape = {
		    coord: [1, 1, 1, 20, 18, 20, 18 , 1],
		    type: 'poly'
	    },
	    map = new google.maps.Map(mapDiv,myOptions),
	    marker = new google.maps.Marker({
		    position: myOptions.center,
		    map: map,
		    shape: shape,
		    title: "",
		    html: ""
	    });
    };
};