function slideNavOn(name)
{
	for (var i = 1; i <= 5; i++)  {
		document.getElementById("slide_nav_"+i).style.visibility = "hidden";
		document.getElementById("slide_nav_"+i).style.posLeft = 353;
         }
         document.getElementById(name).style.visibility = "visible";
         slideNav(name, 1);
}

function slideNav(name, i)
{
	var navPos = document.getElementById(name).style.posLeft;
         var x = i;
         if (x <= 31) {
		var navPos = navPos - 6;
		document.getElementById(name).style.posLeft = navPos;
                 x++;
		setTimeout("slideNav('" + name + "',"+x+")", 5);
	}
}

function slideNavOf()
{
	for (var i = 1; i <= 6; i++)  {
		document.getElementById("slide_nav_"+i).style.visibility = "hidden";
		document.getElementById("slide_nav_"+i).style.posLeft = 353;
         }
}