if(navigator.appVersion.charAt(0) >=3) {
var img = new Array();
img[10] = new Image();  img[10].src = "../image/header/grouptop.gif";
img[20] = new Image();  img[20].src = "../image/header/produts1.gif";
img[30] = new Image();  img[30].src = "../image/header/produts2.gif";
img[40] = new Image();  img[40].src = "../image/header/technology.gif";
img[50] = new Image();  img[50].src = "../image/header/top.gif";

img[11] = new Image();  img[11].src = "../image/header/grouptop_o.gif";
img[21] = new Image();  img[21].src = "../image/header/produts1_o.gif";
img[31] = new Image();  img[31].src = "../image/header/produts2_o.gif";
img[41] = new Image();  img[41].src = "../image/header/technology_o.gif";
img[51] = new Image();  img[51].src = "../image/header/top_o.gif";

}

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

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