if( navigator.appVersion.charAt(0) >= "3") {
 var img = new Array();
 img[0] = new Image();  img[0].src = "/prc-e/images/header_home-e0.gif";
 img[1] = new Image();  img[1].src = "/prc-e/images/header_home-e2.gif";
 img[2] = new Image();  img[2].src = "/prc-e/images/header_product-e0.gif";
 img[3] = new Image();  img[3].src = "/prc-e/images/header_product-e2.gif";
 img[4] = new Image();  img[4].src = "/prc-e/images/header_corporate-e0.gif";
 img[5] = new Image();  img[5].src = "/prc-e/images/header_corporate-e2.gif";
 img[6] = new Image();  img[6].src = "/prc-e/images/header_support-e0.gif";
 img[7] = new Image();  img[7].src = "/prc-e/images/header_support-e2.gif";
}

function _in(name,num) {
	if(navigator.appVersion.charAt(0) >= "3") {
		document.images[name].src = img[num].src;
	}
}

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