//	written	by Tan Ling Wee
//	last updated 20 June 2003
//	email :	fuushikaden@yahoo.com

var orientation = 0	// 0-horizontal 1-vertical
var imgPath = "/images/"

var menuFont = "Arial"
var menuSize = "12px"

/////////////////////////////////////////////////////////////////////////////

var	ie=(navigator.appName=='Microsoft Internet Explorer')
var	ns=(navigator.appName=='Netscape')
var	dom=document.getElementById
var lw_menuId, lw_trigger, to1
var s1

/////////////////////////////////////////////////////////////////////////////

function Tmenu (id, parentId, url, description, img) {
	this.id = id
	this.parentId = parentId
	this.url = url
	this.description = description
	this.numChild = 0
	this.levelId = 0
	this.img = img
}

/////////////////////////////////////////////////////////////////////////////

var menu = new Array()
var menuCounter = 0
var numLevel = 0
var prevMenuId = -1
var nNowAt = 0

function displayMenuItem(menuId) {
	var sHTML
	var cssClass = ""
	var cssFloat = ""
	if (menu[menuId].levelId>0)
		cssClass = " class=\"submenu\""
	
	if ((orientation==0) && (menu[menuId].levelId==0))
		cssFloat = " style=\"float:left\""

	if (menu[menuId].description!='-')
	{
		sHTML = "<a id=\"menu_"+menuId+"\" "+cssClass+cssFloat+" href=\""+menu[menuId].url+"\" onmouseover=\"clearInterval(s1); "

		if (menu[menuId].numChild!=0) {
			sHTML += "showSubmenu("+menu[menuId].id+",this); hideSubmenu(menu["+menuId+"].levelId+1); "
		}
		else
		{
			sHTML += "prevMenuId = "+menuId+"; hideSubmenu(menu["+menuId+"].levelId); "
		}

		sHTML += "nNowAt="+menuId+"\" onmouseout=\"s1=setInterval('hideSubmenu(0)',1000);\">"

		if (menu[menuId].levelId>0)
		{
			sHTML += "<img src=\""
			if (menu[menuId].img=="")
			{
				sHTML += imgPath + "trans.gif"
			}
			else
			{
				sHTML += imgPath + menu[menuId].img
			}
			sHTML += "\" width=16 height=20 border=0 style=\"border:0px; margin-right:4\" align=\"absmiddle\">"
		}

		if ((orientation==0) && (menu[menuId].levelId==0))
		{
			nArrowWidth = 0
		}
		else
		{
			nArrowWidth = 25
		}

		sHTML += menu[menuId].description.replace(" ","&nbsp;")
		if (menu[menuId].numChild>0)
		{
			if ((orientation==0)&&(menu[menuId].levelId==0))
			{
				sHTML += "<img src=\"" + imgPath + "arrow_down.gif\" style=\"border:0px; margin-left:4\">"
			}
			else
			{
				sHTML += "<img src=\"" + imgPath + "arrow_right.gif\" style=\"border:0px; margin-left:4\">"
			}
		}
	}

	sHTML += "</a>"
	if ((orientation==1)||(menu[menuId].levelId>0))
	{
		sHTML = "<div style=\"width:200;text-align:right\">" + sHTML + "</div>"
	}	
	return sHTML
}



function mapID (id) {
	for (var i=0;i<menuCounter;i++)
	{
		if (menu[i].id==id)
		{
			return i
		}
	}
	return -1
}

function showSubmenu(menuId,trigger) {
	lw_menuId = menuId
	lw_trigger = trigger

	if (ns)
	{
		to1 = setTimeout("showActualSubmenu(lw_menuId,lw_trigger)",50)			
	}
	else
	{
		showActualSubmenu(lw_menuId,lw_trigger)
	}
}

function showActualSubmenu(menuId,trigger) {
	var nLevel = 0
	var leftpos = 0 
	var nIndex=0

	if (menuId>0)
	{
		lw_calcpos(trigger)

		for (var i=0;i<menuCounter;i++)
		{
			if (menu[i].id==menuId)
			{	
				nLevel = menu[i].levelId
				nIndex = i
			}
		}

		if ((orientation==1)||(menu[nIndex].parentId>0))
		{
			lw_getObj("menu_level_"+nLevel).top=lw_toppos
			leftpos = lw_leftpos + lw_width + 5

			if (nLevel==0) {
				leftpos -= 3
			}
		}
		else {
			lw_getObj("menu_level_"+nLevel).top = lw_toppos + lw_height + 2
			leftpos = lw_leftpos
		}

		lw_getObj("menu_level_"+nLevel).left=leftpos

		sHTML = ""
		for (var i=0;i<menuCounter;i++)
		{
			if (menu[i].parentId==menuId)
			{
				sHTML += displayMenuItem (i)
			}
		}


		document.getElementById("menu_level_"+nLevel+"_content").innerHTML=sHTML
		lw_showLayer('menu_level_'+nLevel)
	} 
}

function hideSubmenu(levelId) {
	for (var cnt=levelId; cnt<numLevel; cnt++)
	{
		lw_hideLayerName("menu_level_"+cnt)
	}
}

function DrawMenu ()  {

	for (var i=0; i<numLevel ; i++)
	{
		lw_createLayer("menu_level_"+i,0,0,0,0,"#ffffff","#d0d0d0",100)
	}
	
	sHTML=""
	for (var i=0; i<menuCounter; i++)
	{
		if (menu[i].parentId==0)
		{		
			sHTML += displayMenuItem (i)
		}
		else if (menu[i].parentId==-1)
		{		
			sHTML += "<a>" + menu[i].description + "</a>"
		}
	}


	document.writeln(sHTML)

}

function getLevel (menuId) {
	var pId=menuId
	var nLevel=0

	while (pId!=0)
	{
		nLevel++
		for (var i=0;i<menuCounter;i++)
		{
			if (menu[i].id==pId)
			{	
				pId = menu[i].parentId
			}
		}
	}

	return nLevel
}

function AddMenuItem (id, parentId, url, description, img)  {

	menu[menuCounter++] = new Tmenu (id, parentId, url, description, img)

	if (parentId>0)
	{
		for (i=0;i<menuCounter;i++)
		{
			if (menu[i].id==parentId)
			{
				menu[i].numChild++
			}
		}
		menu[menuCounter-1].levelId = getLevel(parentId)

		if ( numLevel < menu[menuCounter-1].levelId)
		{	
			numLevel = menu[menuCounter-1].levelId
		}
	}	 
	else if (parentId==0)
	{
		menu[menuCounter-1].levelId = 0
	}
	else
	{
		menu[menuCounter-1].levelId = -1
	}
}

function handleonclick() {
	if (ns)
	{
		lw_closeAllLayers()
	}
	else
	{
		lw_closeAllLayers(event)
	}

}

function handlekeypress(e) {
	if (ns)
	{
		var keyCode = e.keyCode?e.keyCode:e.which?e.which:e.charCode;
		if ((keyCode==27)||(keyCode==1))
		{
			handleonclick()
		}
	}
	else
	if ((event.keyCode==0)||(event.keyCode==27))
	{
		handleonclick()
	}
}


document.onkeypress = handlekeypress
document.onclick = handleonclick