if(
navigator.appVersion.charAt(0) >= "3") {
 var img = new Array();
 img[0] = new Image();  img[0].src = "http://pioneer.jp/template/img/header_home0.gif";
 img[1] = new Image();  img[1].src = "http://pioneer.jp/template/img/header_home2.gif";
 img[2] = new Image();  img[2].src = "http://pioneer.jp/template/img/header_product0.gif";
 img[3] = new Image();  img[3].src = "http://pioneer.jp/template/img/header_product2.gif";
 img[4] = new Image();  img[4].src = "http://pioneer.jp/template/img/header_corporate0.gif";
 img[5] = new Image();  img[5].src = "http://pioneer.jp/template/img/header_corporate2.gif";
 img[6] = new Image();  img[6].src = "http://pioneer.jp/template/img/header_support0.gif";
 img[7] = new Image();  img[7].src = "http://pioneer.jp/template/img/header_support2.gif";
  	}
function
_in(name,num) {
if(navigator.appVersion.charAt(0) >= "3") {

document.images[name].src = img[num].src;
   } else { }
	}
function
_out(name,num) {
 document.images[name].src = img[num].src;

	}