function show(obj) {
	var divs = document.getElementsByTagName('div');
	var thisDiv = obj.parentNode.getElementsByTagName('div')[0];
	
	for (x=0;x<divs.length;x++) {
		if (divs[x] == thisDiv) {
			divs[x].style.display = 'block';
		} else if (divs[x] != thisDiv && divs[x].className == 'popup') {
			divs[x].style.display = 'none';
		}
	}
}

function hide(obj) {
	obj.parentNode.parentNode.parentNode.style.display = "none";
}