Reading Imagemaps

[gordon7]

Problem:
I want the user to be able to click on a US map to find the product dealers in their state. Most of the states are not nice uniform rectangles. California, for instance, is a pretty complex polygon. I know how to sense the loction of the cursor and I know how to determine if the cursor position is within a certain boundry (in_array) and I know how to set an array of numbers (range()) that will work for rectangular states.

Is ther a function similar to range() that will allow me to set a range that is a poloygon or do I need to break down more complex shapes into rectangles?

<?php
$xcursor_position = $POST[test_x];
$ycursor_position = $POST[test_y];

$xrange = range(1,20);
$yrange = range(45,74);

if ((in_array($xcursor_position, $xrange)) && (in_array($ycursor_postion, $yrange))){
$msg = "Welcome to Northern California";
} else {
$msg = "Sorry";
};
?>

Thanks,
Gordon

[Matt_Kindig]

Probably the easiest way is to use the html <map> and <area> tags. The <area> tag lets you define a complex polygon shape, which can describe the outline of a state easily. You can then place a <a href="script.php?st=CA"> type link in there to link to a page for that state (in this case, California). Google "HTML map area tag" to get syntax.