Shuffle posts

(function( $ ){
   $.fn.shuffle = function() {
		$('#posts').each(function(){
			var $ul = $(this);
			var $liArr = $ul.children('.entry');
			$liArr.sort(function(a,b){
				var temp = parseInt( Math.random()*10 );
				var isOddOrEven = temp%2;
				var isPosOrNeg = temp>5 ? 1 : -1;
				return( isOddOrEven*isPosOrNeg );
			})
			.appendTo($ul);
		});
		var msnry = new Masonry( "#posts", {
			itemSelector: ".entry"
		});
   };
})( jQuery );

$("#shuffle").on( "click", function() {
	event.preventDefault();
	$("#posts").shuffle();
});