var backImage = new Array(); 

backImage[0] = "/2011/bgs/IMG_0153.jpg";
backImage[1] = "/2011/bgs/IMG_0157.jpg";
backImage[2] = "/2011/bgs/IMG_0284.jpg";
backImage[3] = "/2011/bgs/IMG_0677.jpg";
backImage[4] = "/2011/bgs/IMG_2019.jpg";
backImage[5] = "/2011/bgs/IMG_2044.jpg";
backImage[6] = "/2011/bgs/IMG_2134.jpg";
backImage[7] = "/2011/bgs/IMG_2496.jpg";
backImage[8] = "/2011/bgs/IMG_2786.jpg";
backImage[9] = "/2011/bgs/IMG_2791.jpg";
backImage[10] = "/2011/bgs/IMG_2889.jpg";
backImage[11] = "/2011/bgs/IMG_3825.jpg";
backImage[12] = "/2011/bgs/IMG_5639.jpg";
backImage[13] = "/2011/bgs/IMG_9224.jpg";

//-----------------------------

function changeBGImage(whichImage){
if (document.body){
document.body.style.backgroundImage = "url("+backImage[whichImage]+")";
}
}

function show_div(div_id) {
    // show the requested div
    document.getElementById(div_id).style.display = 'block';
}

function hide_div(div_id) {
    // show the requested div
    document.getElementById(div_id).style.display = 'none';
}