function showBox(szDivID)
{
    if(document.layers)	   //NN4+
    {
       document.layers[szDivID].visibility = "show";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(szDivID);
        obj.style.visibility = "visible";
    }
    else if(document.all)	// IE 4
    {
        document.all[szDivID].style.visibility = "visible";
    }
}

function hideBox(szDivID)
{
    if(document.layers)	   //NN4+
    {
       document.layers[szDivID].visibility = "hide";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(szDivID);
        obj.style.visibility = "hidden";
    }
    else if(document.all)	// IE 4
    {
        document.all[szDivID].style.visibility = "hidden";
    }
}