In aspx page add Google Map API KEY in header part of html....like this
<head >You can get your own google map api key from this link. You can place your url
<script src="http://maps.google.com/maps?file=api&v=2& key=ABQIAAAAclK0B2lXQwV5lPy1rLiTFBSN1aiKepvDswXjKa4j2DDWdYvOjhQMO1tywqS8ObgP5dtO70AyyArhzA"
type="text/javascript"> </script >
</head>