if(navigator.appVersion.charAt(0) >=3)
{
    var image = new Array();
    for(i = 0 ; i < 7 ; i++)
    {
        image[i] = new Image();
    }

    image[0].src= "image/home_on.png";
    image[1].src= "image/company_on.png";
    image[2].src= "image/business_on.png";
    image[3].src= "image/products_on.png";
    image[4].src= "image/shanai_on.png";
    image[5].src= "image/saiyou_on.png";
    image[6].src= "image/me_cont_on.jpg";
}