var numberOfFileTypes = 5;

function showAssets(i) {	
	hideAssets();	
	document.getElementById('assets_' + i).style.display = 'block';
	document.images['imgAssets' + i].src = eval('imgAssets' + i + 'on.src'); 
	strOver = 'img' + i;
}

function hideAssets(i) {
	for(i=1;i<=numberOfFileTypes;i++)
		if (document.images['imgAssets' + i]) {
			document.images['imgAssets' + i].src = eval('imgAssets' + i + 'off.src'); 
			document.getElementById('assets_' + i).style.display = 'none';
		}
}