var currentMenu = null;
var currentMenuTimeout = null;

function showPopup( a ) {
	closePopup();
	
	var pos = findPos( a );
	
	var menu = document.getElementById( a.id + "_popup");
	currentMenu = menu;
	
	menu.style.left = pos["x"] + "px";
	menu.style.top = (pos["y"] + 24) + "px";
	
	menu.style.display = 'block';
}

function closePopup() {
	//alert('ClosePopup timeout: ' + ((currentMenuTimeout == null) ? 'null' : 'not null'));

	if (currentMenu != null) {
		currentMenu.style.display = 'none';
		currentMenu = null;
		
		cancelHidePopup();
	}
}

function hidePopup() {
	//alert('HidePopup timeout: ' + ((currentMenuTimeout == null) ? 'null' : 'not null'));
	
	if (currentMenuTimeout != null)
		window.clearTimeout( currentMenuTimeout );
	
	currentMenuTimeout = window.setTimeout( "closePopup()", 1000 );
}

function cancelHidePopup() {
//	alert('CancelHide timeout: ' + ((currentMenuTimeout == null) ? 'null' : 'not null'));
	
	if (currentMenuTimeout != null)
		window.clearTimeout( currentMenuTimeout );
}