function window_onload(){
	setTimeout("collapseElement()",2000);
}

function collapseElement()
{
    var ele1 = document.getElementById('nav1');
    //alert(ele1)
    if (ele1 != null) ele1.style.display = 'none';
    var ele2 = document.getElementById('nav2');
    //alert(ele2)
    if (ele2 != null) ele2.style.display = '';

}
// -->