var isOpen = null;
var nextClose = null;
var nextOpen = null;
var dmenuInterval = null;
function initDMenu() {
	var lists = document.getElementsByTagName('UL');
	
	for (var i = 0; i < lists.length; i++) {
		if (hasParent(lists[i],'LI')) {
			continue;
		}
		if (!matchClassName('dyn_navi', lists[i].className)) {
			continue;
		}
		// it is the dyn_navi-list
		var listElement = findFirstSub(lists[i], 'LI');
		while (listElement) {
			var subMenuDiv = findFirstSub(listElement,'DIV','subMenu');
			if (subMenuDiv) {
				subMenuDiv.style.display = 'none';
				listElement.onmouseover = function() {
					if (!isOpen) {
						var subMenuDiv = findFirstSub(this,'DIV','subMenu');
						if (subMenuDiv) {
							nextOpen = subMenuDiv;
						}
						toggleDMenu();
					} else {
						showChild(this);
					}
				}
				listElement.onmouseout = function() {
					hideChild(this);
				}
				subMenuDiv.onmouseout = function() {
					//this.innerHTML = this.innerHTML + "<br />" + isOpen + "<br />" + nextClose +"<br />" + nextOpen;
					hideChild(getHighParent(this, 'LI'));
				}
				
			}		
			listElement = findNextSub(listElement, 'LI');
		}
		
	}
	
}

function showChild(li) {
	var subMenuDiv = findFirstSub(li,'DIV','subMenu');
	if (subMenuDiv) {
		nextOpen = subMenuDiv;
		if (nextOpen == nextClose) {
			nextClose = null;
		}
	}
	if (dmenuInterval) {
		window.clearInterval(dmenuInterval);
	}
	dmenuInterval = window.setInterval('toggleDMenu()', 500);
}

function hideChild(li) {
	var subMenuDiv = findFirstSub(li,'DIV','subMenu');
	if (subMenuDiv) {
		nextClose = subMenuDiv;
		if (nextOpen == nextClose) {
			nextOpen = null;
		}
	}
	if (dmenuInterval) {
		window.clearInterval(dmenuInterval);
	}
	dmenuInterval = window.setInterval('toggleDMenu()', 500);
}

function dMenuClose() {
	var lists = document.getElementsByTagName('UL');
	
	for (var i = 0; i < lists.length; i++) {
		if (hasParent(lists[i],'LI')) {
			continue;
		}
		if (!matchClassName('dyn_navi', lists[i].className)) {
			continue;
		}
		var listElement = findFirstSub(lists[i], 'LI');
		while (listElement) {
			if (listElement == isOpen) {
				continue;
			}
			var subMenuDiv = findFirstSub(listElement,'DIV','subMenu');
			if (subMenuDiv) {
				subMenuDiv.style.display = 'none';
			}		
			listElement = findNextSub(listElement, 'LI');
		}
	}
}

function toggleDMenu() {
	if (dmenuInterval) {
		window.clearInterval(dmenuInterval);
	}
	//if (nextOpen != nextClose) {
		if (nextClose && isOpen && isOpen == nextClose) {
			nextClose.style.display = 'none';
			isOpen = null;
			nextClose = null;
		}
		dMenuClose();
		if (nextOpen) {
			nextOpen.style.display = 'block';
			nextClose = null;
			isOpen = nextOpen;
			nextOpen = null;
		}
	//}
}