function regionSelector()
{
	var mylist=document.getElementById("regionMenu");
	var options = mylist.options;
	var selRegionID=options[mylist.selectedIndex].value;
	
	for(var i = 0 ; i < options.length ; i++)
	{
		if(selRegionID == options[i].value)
			document.getElementById(options[i].value).style.display = "block";
		else
			document.getElementById(options[i].value).style.display = "none";
	}
}