Détection mobile & tablette

var detection = (function(u){
	return {
		Tablet:(u.indexOf("windows") != -1 && u.indexOf("touch") != -1 && u.indexOf("tablet pc") == -1) 
		|| u.indexOf("ipad") != -1
		|| (u.indexOf("android") != -1 && u.indexOf("mobile") == -1)
		|| (u.indexOf("firefox") != -1 && u.indexOf("tablet") != -1)
		|| u.indexOf("kindle") != -1
		|| u.indexOf("silk") != -1
		|| u.indexOf("playbook") != -1,
		Mobile:(u.indexOf("windows") != -1 && u.indexOf("phone") != -1)
		|| u.indexOf("iphone") != -1
		|| u.indexOf("ipod") != -1
		|| (u.indexOf("android") != -1 && u.indexOf("mobile") != -1)
		|| (u.indexOf("firefox") != -1 && u.indexOf("mobile") != -1)
		|| u.indexOf("blackberry") != -1
	}
})(window.navigator.userAgent.toLowerCase());

if(!detection.Mobile&&!detection.Tablet){
    // Ni un mobile, ni une tablette
}