Example code
<obspl:Splitter id="spl1" runat="server" StyleFolder="styles/default"> <LeftPanel> <Content> ... Left Panel content here ...
...
HTML Link
<a href="javascript:spl1.loadPage('LeftHeader', 'leftHeaderPage.html');">Refresh Panel</a>
JavaScript
spl1.loadPage("LeftHeader", "leftHeaderPage.html");
spl1.loadPage("RightContent", "leftContentPage.html");