function layerroll(whichone,seeit){
	if (document.all){
		document.all[whichone].style.visibility = seeit;
	}
	if (document.layers){
		document.layers[whichone].visibility = seeit;
	}
	if (document.getElementById){
		document.getElementById(whichone).style.visibility = seeit;
	}
}

function roll(img,state,layername){
	if (document.layers){
		document.layers[layername].document.images[img].src = eval(img + "_" + state + ".src");
	}
	else {
		document[img].src = eval(img + "_" + state + ".src");
	}
}

function rollflat(img,state){
	document[img].src = eval(img + "_" + state + ".src");
	
}