How to add the marker on google map?

Question

We're trying to implement the similar to google maps "my maps" behaviour with some customization.

The problem we're struggling against is to put the marker on the map in the similar manner as google does.

Thats the procedure is the following

1. one should click on the "add new marker icon"
2. then drag it until the point of interest
3. with the second mouse click release the marker
4. and javascript generates the bubble

We followed the famous manual Using PHP/MySQL with Google Maps by Pamela Fox and it works just fine. The only thing we're not able to achieve the behaviour we needed. The on map click behaviour does not satisfy our needs.