/*
var url = "http://www.shop-costamesa.com/";

// 先読み
var a_preload = ["category_snowboard.gif", "category_surfing.gif", "category_casual.gif", "category_brand.gif", "category_snowboard_m.gif", "category_surfing_m.gif", "category_casual_m.gif", "category_brand_m.gif"];
var a_img = Array();
for(var i = 0; i < a_preload.length; i++){a_img[i] = new Image(); a_img[i].src = url + "img/" + a_preload[i];};
*/
function slideMenu(id){
	var s = "sub_"+id;
	var m = id+"_pm";
	if(document.getElementById(s).style.display == "block"){
		document.getElementById(m).innerHTML = "+";
	}else{
		document.getElementById(m).innerHTML = "-";
	}
	$('#'+s).slideToggle('normal');
}