function doSomething(e) {
	var code;
	if (!e) var e = window.event;
	if (e.keyCode) code = e.keyCode;
	else if (e.which) code = e.which;
	var character = String.fromCharCode(code);
	if (code == 37) {
		//alert(document.getElementById('prevlnk').getAttribute('href'));
		document.Back.src='/images/garage/back-over.gif';
		window.location = '' + document.getElementById('prevlnk').getAttribute('href') + '';
	}
	if (code == 39) {
		//alert(document.getElementById('nextlnk').getAttribute('href'));
		document.Forward.src='/images/garage/forward-over.gif';
		window.location = '' + document.getElementById('nextlnk').getAttribute('href') + '';
	}
}
document.onkeydown = doSomething;