var flowerup = true;

function ShowBlock(id) {
	document.getElementById('zip_'+id).style.display = 'block';
	document.getElementById('expand_'+id).style.display = 'none';
}
function PowerUp(id) {
	var img = document.getElementById(id);
	if(flowerup == false) {
		img.src= img.src.replace('_on', ''); flowerup = true;
	} else {
		img.src= img.src.replace('.gif', '_on.gif');  flowerup = false;
	}
}
function blink() {
    document.getElementById('message').style.visibility=(document.getElementById('message').style.visibility=='visible')?'hidden':'visible';
}
var interval;
function show_message() {
    document.getElementById('message').style.display = 'block';
    interval = setInterval('blink()',500);
}
function stop_message() {
    clearInterval(interval);
    document.getElementById('message').style.display = 'none';
}