javascript draw rectangle on google mashups

Question

Hi, I wanted to draw a rectangle as follows:

http://www.codingforums.com/archive/index.php/t-86247.html

but only once every time. For example, if I draw rectangle second time I am drawing a new one the previous immediately should disappear.

on google mashups

http://code.google.com/apis/maps/documentation/javascript/v2/examples/map-simple.html

similar to the one done here

http://opentopo.sdsc.edu/gridsphere/gridsphere?gs_action=lidarDataset&cid=geonlidarframeportlet&opentopoID=1007

region on google mashup will be specified, i.e. drawn with some color and set, and I will need to let user draw a rectangular area on that region, then let the user know the four points of his selection as longitude and latitude. Thanks!

Answer 1

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