var mainnav_hide_navitem;
var mainnav_hide_subnav;
var mainnav_hide_subsubnav;

function mainnav_subnav_show(navitem, subnav)
{
	mainnav_hide_navitem = "";
	mainnav_hide_subnav = "";

        document.getElementById("navitem1").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem2").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem3").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem4").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem5").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem6").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";

        document.getElementById("subnav1").style.display = "none";
        document.getElementById("subnav2").style.display = "none";
        document.getElementById("subnav3").style.display = "none";
        document.getElementById("subnav4").style.display = "none";
        document.getElementById("subnav5").style.display = "none";

        document.getElementById(navitem).style.backgroundImage = "url(/_images/common/nav_bg_on.gif)";
	document.getElementById(subnav).style.display = "block";
}

function mainnav_subnav_hide(navitem, subnav)
{
    mainnav_hide_navitem = navitem;
    mainnav_hide_subnav = subnav;
    setTimeout('mainnav_subnav_hide2()', 1);
}

function mainnav_subnav_hide2()
{
    	if (mainnav_hide_navitem != "")
   	{
	        document.getElementById(mainnav_hide_navitem).style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
	}
    	if (mainnav_hide_subnav != "")
	{
       		document.getElementById(mainnav_hide_subnav).style.display = "none";
	        document.getElementById("subsubnav26").style.display = "none";
	}
}

function mainnav_subsubnav_show(navitem, subnav, subsubnav)
{
	mainnav_hide_navitem = "";
	mainnav_hide_subnav = "";
	mainnav_hide_subsubnav = "";

        document.getElementById("navitem1").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem2").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem3").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem4").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem5").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
        document.getElementById("navitem6").style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";

        document.getElementById("subnav1").style.display = "none";
        document.getElementById("subnav2").style.display = "none";
        document.getElementById("subnav3").style.display = "none";
        document.getElementById("subnav4").style.display = "none";
        document.getElementById("subnav5").style.display = "none";

        document.getElementById("subsubnav26").style.display = "none";

        document.getElementById(navitem).style.backgroundImage = "url(/_images/common/nav_bg_on.gif)";
	document.getElementById(subnav).style.display = "block";
	document.getElementById(subsubnav).style.display = "block";
}

function mainnav_subsubnav_hide(navitem, subnav, subsubnav)
{
    mainnav_hide_navitem = navitem;
    mainnav_hide_subnav = subnav;
    mainnav_hide_subsubnav = subsubnav;
    setTimeout('mainnav_subsubnav_hide2()', 1);
}

function mainnav_subsubnav_hide2()
{
    	if (mainnav_hide_navitem != "")
   	{
	        document.getElementById(mainnav_hide_navitem).style.backgroundImage = "url(/_images/common/nav_bg_off.gif)";
	}
    	if (mainnav_hide_subnav != "")
	{
       		document.getElementById(mainnav_hide_subnav).style.display = "none";
	}
    	if (mainnav_hide_subsubnav != "")
   	{
	       	document.getElementById(mainnav_hide_subsubnav).style.display = "none";
	}
}