function OnExpandCollapseButtonClick(s, e) {
    var isVisible = pnlHistoryContent.GetClientVisible();
    s.SetText(isVisible ? "+" : "-");
    pnlHistoryContent.SetClientVisible(!isVisible);
}

function OnExpandCollapseButtonStandardClick(s) {
    var isVisible = ContentPanel2.GetClientVisible();

    ContentPanel2.SetClientVisible(!isVisible);
}

function expandPanel(elementID) {
    eval("var isVisible = " + elementID + ".GetClientVisible();");
    eval(elementID + ".SetClientVisible(!isVisible);");
}