function ShowBottom()
{
	var y;
	if (self.innerHeight) // all except Explorer
	{
		y = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		y = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		y = document.body.clientHeight;
	}

	el = document.getElementById("bottom")
	if(document.body.scrollHeight <= y) {
		el.style.position = "absolute";
		el.style.bottom = "0px";
	}
	el.style.visibility = "visible";
}