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googlemaps-v3-utility-library

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<!DOCTYPE html> <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>Drag Zoom Using Alt/Option Key</title> <style> #map { width:700px; height:500px; border:1px solid #000; } </style> <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?v=3&amp;sensor=false"></script> </script> <script type="text/javascript"> document.write('<script type="text/javascript" src="../src/keydragzoom'+(document.location.search.indexOf('packed')>-1?'_packed':'')+'.js"><'+'/script>'); </script> <script type="text/javascript"> var map; function init() { var myOptions = { zoom: 12, center: new google.maps.LatLng(35.227, -80.84), mapTypeId: google.maps.MapTypeId.ROADMAP } map = new google.maps.Map(document.getElementById("map"), myOptions); map.enableKeyDragZoom({ key: 'alt' }); } </script> </head> <body onload="init()"> <a href='?packed'>Packed</a> | <a href='?'>Unpacked</a> Version of the script. <br /> Hold down the <span style="color: red; font-weight: bold;" >Alt/Option</span> key while dragging a box. <div id="map"></div> </body> </html>