var btn;
var abtn = 'home';

function buttonOver(btn) {
        btn.src = "images/" + "buttondn.gif";
}

function buttonOut(btn) {
        btn.src = "images/" + "buttonup.gif";
}

function buttonArrow(btn) {
        btn.src = "images/buttonbl.gif";
}

// preload images so other pages load faster
function initImgs(){
//     = new Image();
//	.src = 'images/.gif';

// outer border images
    topleft = new Image();
    topleft.src = 'images/topleft.gif';
    top = new Image();
    top.src = 'images/top.gif';
    topright = new Image();
    topright.src = 'images/topright.gif';
    left = new Image();
    left.src = 'images/left.gif';
    right = new Image();
    right.src = 'images/right.gif';
    botleft = new Image();
    botleft.src = 'images/botleft.gif';
    botright = new Image();
    botright.src = 'images/botright.gif';
    bottom = new Image();
    bottom.src = 'images/bottom.gif';

// navigation buttons, circles and lines


// inner border images
	itop = new Image();
	itop.src = 'images/itop.gif';
	itopleft = new Image();
	itopleft.src = 'images/itopleft.gif';
	itopright = new Image();
	itopright.src = 'images/itopright.gif';
	ileft = new Image();
	ileft.src = 'images/ileft.gif';
	iright = new Image();
	iright.src = 'images/iright.gif';
	ibotleft = new Image();
	ibotleft.src = 'images/ibotleft.gif';
	ibotright = new Image();
	ibotright.src = 'images/ibotright.gif';
	ibottom = new Image();
	ibottom.src = 'images/ibottom.gif';
}