function swapIn(me) {
	if (arguments.length > 1) {
		ext = document.getElementById('lineExtension');
		ext.style.top = arguments[1] + "px";
		ext.style.left = arguments[2] + "px";
		ext.style.width = arguments[3] + "px";
	}
	me = document.getElementById(me);
	me.src = me.src.replace("/there","/over");
}

function swapOut(me) {
	ext = document.getElementById('lineExtension');
	if (ext) {
		ext.style.left = "-55px";
		ext.style.top = "0px";
		ext.style.width = "55px";
	}
	me = document.getElementById(me);
	me.src = me.src.replace("/over","/there");
}