function wopen(page, title, width, height, features) {
	if(!page)
		return false;

	if(!width)
		width = '500';

	if(!height)
		height = '550';

	if(!features)
		features = ', scrollbars=0,resizable=0,status=0';
		
	window.open( page, title, 'width=' + width + ' , height=' + height + features);
}

function imgswitch(img, src) {
	img.src = src;
}