var blurb_panel;
var image_panel;

function switchPanel(panel) {
    if (!blurb_panel || !image_panel) {
        blurb_panel = document.getElementById('royal_coach_blurb');
        image_panel = document.getElementById('royal_coach_image');
    }
    blurb_panel.style.display = 'none';
    image_panel.style.display = 'none';
    blurb_panel = document.getElementById(panel+'_blurb');
    image_panel = document.getElementById(panel+'_image');
    blurb_panel.style.display = 'block';
    image_panel.style.display = 'block';
}