var preloadFlag = false;
var SBDnav01;
var SBDnav02;
var SBDnav03;
var SBDnav04;
var SBDnav05;
var SBDnav06;
var SBDnav07;
var SBDnav08;

function newImage(arg) 
{
	if (document.images) 
	{
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImages() 
{
	if (document.images && (preloadFlag == true)) 
	{
		for (var i=0; i<changeImages.arguments.length; i+=2) 
		{
			document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1]+".src");
		}
	}
}


	if (document.images) 
	{
		SBDnav01 = newImage("images/SBDnav01.gif");
		SBDnav02 = newImage("images/SBDnav02.gif");
		SBDnav03 = newImage("images/SBDnav03.gif");		
		SBDnav04 = newImage("images/SBDnav04.gif");				
		SBDnav05 = newImage("images/SBDnav05.gif");				
		SBDnav06 = newImage("images/SBDnav06.gif");						
		SBDnav07 = newImage("images/SBDnav07.gif");				
		SBDnav08 = newImage("images/SBDnav08.gif");						
		preloadFlag = true;
	}

function layerVis(id,dir) 
{
    if (document.layers) 
	{
        v = (dir == "on") ? "show" : "hide";
    }
    else if (document.all) 
	{
        v = (dir == "on") ? 'visible'	: 'hidden';
        document.all[id].style.visibility = v;
    }
    else if (document.getElementById) 
	{
        v = (dir == "on") ? 'visible' : 'hidden';
        document.getElementById(id).style.visibility = v;
    }
}