NavX = new Image(580,200);
NavS = new Image(580,200);
NavA = new Image(580,200);
NavT = new Image(580,200);
NavG = new Image(580,200);

var base = "images/nav"+page;
var thisone = base+".png";
NavX.src = thisone;
if (page == 'S') { NavS.src = NavX.src }
else {
	thisone = base+"S.png";
	NavS.src = thisone;
}
if (page == 'A') { NavA.src = NavX.src }
else {
	thisone = base+"A.png";
	NavA.src = thisone;
}
if (page == 'T') { NavT.src = NavX.src }
else {
	thisone = base+"T.png";
	NavT.src = thisone;
}
if (page == 'G') { NavG.src = NavX.src }
else {
	thisone = base+"G.png";
	NavG.src = thisone;
}


function navflip(mode) {
	var eid = document.getElementById('navpop');
	if (mode == "X") { eid.src = NavX.src; return true; }
	if (mode == "S") { eid.src = NavS.src; return true; }
	if (mode == "A") { eid.src = NavA.src; return true; }
	if (mode == "T") { eid.src = NavT.src; return true; }
	if (mode == "G") { eid.src = NavG.src; return true; }
}