html, body {
	min-height: 640px;
	padding: 0px;
	margin: 0px;
	height: 100%;
	width: 100%;
}

#wrapper {
	padding: 0px;
	margin: 0px;
	width: 100%;
	min-height:640px;
	_height: 640px;
    height:100%;
}