Array.prototype.naturalSort= function(){
	var a, b, a1, b1, rx=/(\d+)|(\D+)/g, rd=/\d+/;
	return this.sort(function(as, bs){
		a= String(as).toLowerCase().match(rx);
		b= String(bs).toLowerCase().match(rx);
		while(a.length && b.length){
			a1= a.shift();
			b1= b.shift();
			if(rd.test(a1) || rd.test(b1)){
				if(!rd.test(a1)) return 1;
				if(!rd.test(b1)) return -1;
				if(a1!= b1) return a1-b1;
			}
			else if(a1!= b1) return a1> b1? 1: -1;
		}
		return a.length- b.length;
	});
}