function toggleVisibility(id, NNtype, IEtype, WC3type) {
    if (document.getElementById) {
        eval("document.getElementById(id).style.visibility = \"" + WC3type + "\"");
    } else {
        if (document.layers) {
            document.layers[id].visibility = NNtype;
        } else {
            if (document.all) {
                eval("document.all." + id + ".style.visibility = \"" + IEtype + "\"");
            }
        }
    }
}

var unself

function timerabout(offon)  {
	if (offon == 0)	{
	    unself = setTimeout('toggleVisibility(\'aboutnav\',\'hidden\',\'hidden\',\'hidden\');', 2000);
	    }
	if (offon ==1)	{
		clearTimeout(unself);
	}
}

function timerconsult(offon)  {
	if (offon == 0)	{
	    unself = setTimeout('toggleVisibility(\'consultnav\',\'hidden\',\'hidden\',\'hidden\');', 2000);
	    }
	if (offon ==1)	{
		clearTimeout(unself);
	}
}

function timerbroker(offon)  {
	if (offon == 0)	{
	    unself = setTimeout('toggleVisibility(\'brokernav\',\'hidden\',\'hidden\',\'hidden\');', 2000);
	    }
	if (offon ==1)	{
		clearTimeout(unself);
	}
}

function timermanage(offon)  {
	if (offon == 0)	{
	    unself = setTimeout('toggleVisibility(\'managenav\',\'hidden\',\'hidden\',\'hidden\');', 2000);
	    }
	if (offon ==1)	{
		clearTimeout(unself);
	}
}