function ClearTextBox(control) {
    var ctrl = document.getElementById(control);
    ctrl.value = "";
}

function RotateSlidingPanel() {
    if (counter == 1) {
        sp1.showPanel(0);
        counter++;
        document.getElementById("imgPnl1").src = img_on.src;
        document.getElementById("imgPnl2").src = img_off.src;
        document.getElementById("imgPnl3").src = img_off.src;
        document.getElementById("imgPnl4").src = img_off.src;
    }
    else if (counter == 2) {
        sp1.showPanel(1);
        counter++;
        document.getElementById("imgPnl1").src = img_off.src;
        document.getElementById("imgPnl2").src = img_on.src;
        document.getElementById("imgPnl3").src = img_off.src;
        document.getElementById("imgPnl4").src = img_off.src;
    }
    else if (counter == 3) {
        sp1.showPanel(2);
        counter++;
        document.getElementById("imgPnl1").src = img_off.src;
        document.getElementById("imgPnl2").src = img_off.src;
        document.getElementById("imgPnl3").src = img_on.src;
        document.getElementById("imgPnl4").src = img_off.src;
    }
    else {
        sp1.showPanel(3);
        counter = 1;
        document.getElementById("imgPnl1").src = img_off.src;
        document.getElementById("imgPnl2").src = img_off.src;
        document.getElementById("imgPnl3").src = img_off.src;
        document.getElementById("imgPnl4").src = img_on.src;
    }
}

img_on = new Image(); img_on.src = "/images/buttonrollover.png";
img_off = new Image(); img_off.src = "/images/button.png";

function handleOver(control) {
    document.getElementById(control).src = img_on.src;
}

function handleOut(control, panel) {
    if (sp1.getCurrentPanel().id == panel)
        document.getElementById(control).src = img_on.src;
    else
        document.getElementById(control).src = img_off.src;
}

function SliderClick(control) {
    clearInterval(myInterval);

    if (control == "imgPnl1") {
        sp1.showPanel(0);
        document.getElementById("imgPnl1").src = img_on.src;
        document.getElementById("imgPnl2").src = img_off.src;
        document.getElementById("imgPnl3").src = img_off.src;
        document.getElementById("imgPnl4").src = img_off.src;
    } else if (control == "imgPnl2") {
        sp1.showPanel(1);
        document.getElementById("imgPnl1").src = img_off.src;
        document.getElementById("imgPnl2").src = img_on.src;
        document.getElementById("imgPnl3").src = img_off.src;
        document.getElementById("imgPnl4").src = img_off.src;
    } else if (control == "imgPnl3") {
        sp1.showPanel(2);
        document.getElementById("imgPnl1").src = img_off.src;
        document.getElementById("imgPnl2").src = img_off.src;
        document.getElementById("imgPnl3").src = img_on.src;
        document.getElementById("imgPnl4").src = img_off.src;
    } else {
        sp1.showPanel(3);
        document.getElementById("imgPnl1").src = img_off.src;
        document.getElementById("imgPnl2").src = img_off.src;
        document.getElementById("imgPnl3").src = img_off.src;
        document.getElementById("imgPnl4").src = img_on.src;
    }
}

// Rotate through a variable number of case studies.
// Each case study has an element ID that increments.
function RotateSlidingPanelCS() {
    // If there are 1 (or none), don't rotate.
    if (counterCSLimit <= 1)
        return;

    counterCS++;
    if (counterCS > counterCSLimit) {
        counterCS = 1;
    }

    var iPanelToShow = counterCS;
    var sPanelId = "cs_p" + iPanelToShow;

    // Hide all visible items first. Then fade in the selected case study.
    var toHide = jQuery('#castStudyDiv .SlidingPanelsContent:visible');
    if (toHide.length > 0) {
        toHide.fadeOut('normal', function () {
            jQuery('#' + sPanelId).fadeIn('slow');
        });
    } else {
        jQuery('#' + sPanelId).fadeIn('slow');
    }
}