//�\����
var PICKUP = 4;

$(function(){
	var pic_num = $("#pickup li").length;
	var num = [];
	for(var i = 0; i < pic_num; i++) num[i] = i;
	for(var j = pic_num - 1; j >= 0; j--) {
		var r = Math.floor(Math.random() * pic_num);
		var tmp = num[j];
		num[j] = num[r];
		num[r] = tmp;
	}
	var result = num.splice(0, PICKUP);
	$("#pickup li").each(function(i){
		$(this).css({"display":"none"});
		for(k=0; k<	result.length; k++){
			if(i == result[k]){
				$(this).css({"display":"block"});
			}
		}
	});
});