function downloadDemo()
{
	var os;
	
	if (navigator.platform.indexOf("Win") != -1)
		os = "Windows";
	else if (navigator.platform.indexOf("Mac") != -1)
		os = "Mac";
	else if (navigator.platform.indexOf("Linux") != -1)
		os = "Linux";
	
		if (os == "Mac")
		window.location.href = "demo/And Yet It Moves Demo v1.3.0.dmg";
	else
		window.location.href = "demo/And Yet It Moves Demo v1.3.0 Setup.exe";
}