Suppose the map has been fully drawn.
Now, the user may insert a new address and click “go there”.
Can the map be moved to the new address without creating the map again?
Just to be clear, after the map was drawn can I avoid using again:
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
and instead use something like
map.goTo(<new address>);
The method that you need is panTo.
See the Google Maps Javascript API V3 Reference for more information.