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JavaScript Image Maps


If the scriptMap parameter is set to true, javAPRS will attempt to call the following JavaScript method:

function getMapURL(screencenterlat, screencenterlon, toplat, leftlon, bottomlat, rightlon, width, height)

which returns the URL of the GIF or JPEG (or PNG if capable) map image.

screencenterlat,screencenterlon = float values, decimal degrees, south & west are negative
toplat,leftlon = float values, decimal degrees, south & west are negative of the top left corner
bottomlat,rightlon = float values, decimal degrees, south & west are negative of the bottom right corner
width,height = integer values of the dimensions of the map in pixels

NOTE: You must add MAYSCRIPT to the APPLET definition for the call to getMapURL to work. For instance:

<APPLET code="javAPRS.class" codebase="javAPRS" height="400" width="600" ID="javAPRS" archive="japrs.jar" MAYSCRIPT>


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