you are missing the code that defines the myPano variable:
var myPano = new GStreetviewPanorama(document.getElementById("pano"));
add that code just after:
var map = new GMap2(document.getElementById('wagmp_map_1'));
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.