var fade = function(divID) {
	var displayState = $(divID).getStyle('display'); 
	if (displayState == 'none') {
		fadeIn(divID);
	} else {
		fadeOut(divID);
	}
}

var fadeIn = function(divID){
	var div = $(divID).setStyles({
		display:'block',
		opacity: 0
	});
	new Fx.Style(div, 'opacity', {duration: 1000} ).start(1);
}
var fadeOut = function(divID){
	var div = $(divID).setStyles({
		display:'none',
		opacity: 1
	});
	new Fx.Style(div, 'opacity', {duration: 10} ).start(1);
}

function checkFormState() {
	//checkSingleState('formLow','sentLow','downloadLowRes');
	checkSingleState('formHigh','sentHigh','downloadHighRes');
}

function checkSingleState(formID, buttonID, tabID) {
	if (document.getElementById(buttonID).value == 0 ) {
		document.getElementById(formID).style.display = 'block';
	} else if (document.getElementById(buttonID).value == 2) {
		document.getElementById(formID).style.display = 'block';
		document.getElementById(tabID).style.display = 'block';
	} else {
		document.getElementById(formID).style.display = 'none';
		document.getElementById(tabID).style.display = 'block';
	}
}