var path_to_theme = '/sites/all/themes/ivotenz';

var pic_loading   = new Image();
pic_loading.src   = path_to_theme + '/images/wait.gif';

var pic_urls = new Array(
    "drummer.jpg",
    "hoodygirl.jpg",
    "glassesgirl.jpg",
    "whitedude.jpg",
    "artyguy.jpg",
    "breaker.jpg",
    "rocker.jpg"
);

var var_image = new Image();

function pickPicture(pic_id) {
    var urlselect = Math.floor(Math.random()* pic_urls.length);
    var pic_tag   = $(pic_id);
    if(!pic_tag) { alert('Failed to find tag: ' + pic_id); return; }
    pic_tag.attr('alt',   "Picture " + (urlselect + 1));
    pic_tag.attr('title', "Picture " + (urlselect + 1));
    pic_tag.src    = pic_loading.src;
    var_image.src = path_to_theme + '/images/people/' + pic_urls[urlselect];
    pic_tag.attr('src', var_image.src);
}

$(document).ready( function() { pickPicture('#person-pic'); });