// preload =============================== 
function pathDepth2(path)
	{
	// amazonia subheaders 
	preload("early",path+"sh_ama_early.gif");
	preload("early1",path+"sh_ama_early_roll.gif");
	preload("quest",path+"sh_ama_quest.gif");
	preload("quest1",path+"sh_ama_quest_roll.gif");
	preload("leg",path+"sh_ama_leg.gif");
	preload("leg1",path+"sh_ama_leg_roll.gif");

	//sub-subheaders
	preload("michaels_intro",path+"ssh_michaels_intro.gif");
	preload("michaels_intro1",path+"ssh_michaels_intro_roll.gif");
	preload("milestones",path+"ssh_milestones.gif");
	preload("milestones1",path+"ssh_milestones_roll.gif");
	preload("essays",path+"ssh_essays.gif");
	preload("essays1",path+"ssh_essays_roll.gif");
	}

function preload(imgObj,imgSrc) 
	{
	eval(imgObj+' = new Image()')
	eval(imgObj+'.src = "'+imgSrc+'"')
	}

// rollover function =============================== 
function changeImage(imgName,imgObj) 
	{
	document.images[imgName].src = eval(imgObj+".src")
	}