function checkDevice() {

	if( (navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i)) || (navigator.userAgent.match(/iPad/i)) ) {
		
		$("#wrapper").html("<center><a href='http://itunes.apple.com/de/app/tarranado/id470155129?mt=8'><img src='img/appStoreIndex.png' border='0' id='iOSimage' style='display: none;'/></a></center>");
		
		$(document).ready(function() {
			
			$("#iOSimage").slideDown("slow");
			
		});
		
	}
	
}