var newwindow = ''
function popitup(url) {
	if (newwindow.location && !newwindow.closed) {
		newwindow.location.href = url;
		newwindow.focus();
	}
	else {
		newwindow = window.open(url, 'htmlname', 'width=680,height=608,resizable=1, scrollbars=1');
	}
}

function tidy() {
	if (newwindow.location && !newwindow.closed) {
		newwindow.close();
	}
}
function showFish(spanId) {
	document.getElementById(spanId).style.visibility = 'visible';
}
function closeFish(spanObj) {
	spanObj.style.visibility = 'hidden';
}