function submitOnChange() {
	var formArray = document.getElementsByTagName("form");
	var theForm = formArray[0];
	var theTarget = document.getElementById("regionSelect");
	addEvent(theTarget, 'change', function () { theForm.submit(); });
}
addEvent(window, 'load', submitOnChange);

function hideButtonOnLoad() {
	var inputItems = document.getElementsByTagName("input");
	for ( i=0 ; i < inputItems.length ; i++) {
		if(inputItems[i].getAttribute('class') == "hiddenbutton") {
			inputItems[i].style.display = "none";
		} //end check class
	} // end for loop	
}
addEvent(window, 'load', hideButtonOnLoad);