Enhancement of a Google Maps html file.

This project requires someone who has more than beginners experience with Google Maps. This is a project that allows the user walking in a park view their position and access information on their cellular phone or mobile device. I have a Google Maps file (with polylines/polygons/icons/Markers) that goes with this project and I would like to add 3 features to that file. 1) Scalable Icons. The project has standard icons/markers. The project has several icons and depending on the Zoom the icons can get very overcrowded. One way of doing this might be to have them as filled in polygons. To have the polygon set to be 1 square meter in size, or even 0.5 m2 in size. They will be invisible went at low levels of zoom which would be OK I would like to have these markers (polygons) act like icons in that in you click on them you get a title and space for a link to a page, or hover over them you get a title. To add this feature to a standard google maps polygon. I am open to suggestions about how to do this. The Project is presently written so it can be viewed on cell phones, pads as primary users. Also has a secondary use a desktops. You need not focus on this aspect, but I am mentioning it as ultimately broad compatability would be good. 2) I would like the user’s present position to show on the map. At this time the program shows a pushpin for the user’s present position. The problem is that the pushpin’s position is set when the user opens the file but does not update. I would like it to update in some way. I would like to do this in a way that would conserve as much as possible the battery like of the phone or pad. I am open to suggestions. as to whether this this would be by time (every minute) or by distance (moved 10 meters) or some other way. ? The user will be walking, 3) I will be testing this on cellular phones and an ipad. I may ask you to make a modification so that the Google Maps part will be responsive and in some way make better use the window space as the present body of the project does.