if(navigator.appVersion.charAt(0) >= "3"){
	hdr_btn2 = new Array();
	hdr_btn2[0] = new Image; hdr_btn2[0].src = "../img/c_hdr_btn_01_01.jpg";
	hdr_btn2[1] = new Image; hdr_btn2[1].src = "../img/c_hdr_btn_01_02.jpg";
	hdr_btn2[2] = new Image; hdr_btn2[2].src = "../img/c_hdr_btn_02_01.jpg";
	hdr_btn2[3] = new Image; hdr_btn2[3].src = "../img/c_hdr_btn_02_02.jpg";
	hdr_btn2[4] = new Image; hdr_btn2[4].src = "../img/c_hdr_btn_03_01.jpg";
	hdr_btn2[5] = new Image; hdr_btn2[5].src = "../img/c_hdr_btn_03_02.jpg";
	hdr_btn2[6] = new Image; hdr_btn2[6].src = "../img/c_hdr_btn_04_01.jpg";
	hdr_btn2[7] = new Image; hdr_btn2[7].src = "../img/c_hdr_btn_04_02.jpg";
	hdr_btn2[8] = new Image; hdr_btn2[8].src = "../img/c_hdr_btn_05_01.jpg";
	hdr_btn2[9] = new Image; hdr_btn2[9].src = "../img/c_hdr_btn_05_02.jpg";
}

function chg_hdr_btn2(a,b){  //aは下のnameに対応し、bは上の配列に対応
	if(navigator.appVersion.charAt(0) >= "3"){
		document.images["hdr_btn_" +a].src=hdr_btn2[b].src;
	}
}