function doMap()
{
	theMap = document.getElementById("displayMap").value;
	coast = document.getElementById("coast").checked;
	nation = document.getElementById("nation").checked;
	state = document.getElementById("state").checked;
	river = document.getElementById("river").checked;
	lake = document.getElementById("lake").checked;
	island = document.getElementById("island").checked;
	getMap = "map_plot.php?map="+theMap+"&coast="+coast+"&nation="+nation+"&state="+state+"&river="+river+"&lake="+lake+"&island="+island
	document.getElementById("worldMap").innerHTML = "<img src='"+getMap+"' width='600' height='300' alt='plotting....'>";
}