instead of using css max-width for left content area, just figure max-width into calculation.  it's more intuitive that way.
added some code to optimize the picture display space -- or rather maximize map display when picture space width is under-used due to aspect ratio.
re-instated a very simple label, per Rupert's request.  this time, I'm using the infoWindow instead of MultiTips.
rupert's button updates
allow for case insensitive field name parsing.
accept either caption or description for caption field name.
widened the infowindow and also aligned text center.
hide all the various infowindow pointers.
hide the hoverinfo when a user clicks on a graphic.