function showCase(what) {
    if (what == "legal") document.getElementById('divShowcaseContainer').style.backgroundImage = 'url(../ig_res/publicviewer/images/login/legal_info.gif)';
    else if (what == "land") document.getElementById('divShowcaseContainer').style.backgroundImage = 'url(../ig_res/publicviewer/images/login/land_info.gif)';
    else if (what == "maps") document.getElementById('divShowcaseContainer').style.backgroundImage = 'url(../ig_res/publicviewer/images/login/maps_info.gif)';
    else if (what == "trades") document.getElementById('divShowcaseContainer').style.backgroundImage = 'url(../ig_res/publicviewer/images/login/licenses_info.gif)';
    else document.getElementById('divShowcaseContainer').style.backgroundImage = 'url(../ig_res/publicviewer/images/login/pv_info.gif)';
}