var nav_timer
var nav_menu_origin=-1;
var nav_scrollover=1;
var nav_scrolling=1;
function nav_scroll()
{
if (window.innerHeight)
{
	page_pos = window.pageYOffset
}
	else if (document.documentElement && document.documentElement.scrollTop)
{
	page_pos = document.documentElement.scrollTop
}
else if (document.body)
{
	page_pos = document.body.scrollTop
}

	var menu=document.getElementById("navcontainer");
	var menu_pos=parseInt(menu.style.top);
	if (nav_menu_origin==-1) nav_menu_origin=menu_pos;
	var menu_distance=Math.abs(menu_pos-(page_pos+nav_menu_origin));
	
  if (nav_scrolling==1 && nav_scrollover==1)
	if (menu_distance<4 && menu_distance!=0) 
	{
		if (menu_pos<(page_pos+nav_menu_origin)) menu_pos++;
		else menu_pos--;
	}
	else
	{
		if (menu_pos<(page_pos+nav_menu_origin)) menu_pos+=Math.floor(menu_distance/4);
		else menu_pos-=Math.floor(menu_distance/4);
	}
	menu.style.top=menu_pos+"px";
  nav_timer=setTimeout("nav_scroll()",100);
}
 
function nav_stop()
{
	clearTimeout(nav_timer);
}