var currentImage = null;

function showLarge(id) {
	if(currentImage != null) {
		oldImage = document.getElementById('thumb' + currentImage);
		oldImage.setAttribute("class", ''); //For Most Browsers
		oldImage.setAttribute("className", ''); //For IE; harmless to other browsers.
	}
		
	newImage = document.getElementById('thumb' + id);
	newImage.setAttribute("class", 'on'); //For Most Browsers
	newImage.setAttribute("className", 'on'); //For IE; harmless to other browsers.
	currentImage = id;
	
	document.getElementById('large').src = '../TRimages/large' + id + '.jpg';
}


function switchSky(id) {
	mast = document.getElementById('masthead');
	if(id == 'default') {
		mast.setAttribute("class", 'photo photoDefault'); //For Most Browsers
		mast.setAttribute("className", 'photo photoDefault'); //For IE; harmless to other browsers.
	}
	else {
		mast.setAttribute("class", 'photo photo-' + id); //For Most Browsers
		mast.setAttribute("className", 'photo photo-' + id); //For IE; harmless to other browsers.
	}
}