// JScript File
 function showPanel(sender, e) 
 {         
    var button = sender;           
            
    if (button) 
    {
        //Hide all panels first
        var panels = document.getElementsByTagName("Div");
        for (var i = 0; i < panels.length; i++) 
        {
            var panel = panels[i];
            if(panel.id.substring(0,6)=="pnlbtn")
            {
                panels[i].style.visibility="hidden"; 
            }      
        }   
    
        //Show the requested panel
        var panelId = "pnl" + button.id;
        var item = document.getElementById(panelId);
        
        if(item!=null)
        {
            item.style.visibility="visible";
        }
            
    }
}