/*
	Written by Nathan Wilkes, Saraden Studios
	All rights reserved
	Copyright (c) 2002
	nathan@saraden.co.nz
*/

menuImageNone = 0;
menuImageIcon = 1;
menuImageFull = 2;

menuDivsDirty = new Array();
menuSpacers = 0;
menuNavWidth = 0;

function	menuObjMenu (theClass)
{
	this.CSSClass = theClass;
	this.DisplayDiv = null;
	
	this.Children = new Array();
	this.AddChild = function AddChild (childobj)
	{
		var theIDX;
		
		theIDX = this.Children.length;
		this.Children[theIDX] = childobj;
		
		return childobj;
	}
}

function	menuObjItem (theImage, imagemouseover, imagewidth, imageheight, theImageType, theText, theURL, theMenuObj)
{
	this.Image = theImage;
	this.ImageMouseover = imagemouseover;
	this.ImageWidth = imagewidth
	this.ImageHeight = imageheight;
	this.ImageType = theImageType;
	this.Text = theText;
	this.URL = theURL;
	this.PopupMenu = theMenuObj;
}

function	menuDefine (baseclass)//, menuitem1(p=1)...
{
	var theObj, x;
	
	theObj = new menuObjMenu (baseclass);

	for (x = 1; x < arguments.length; x++)
		theObj.AddChild (arguments[x]);
		
	return theObj;
}

function menuItem (image, imagemouseover, imagewidth, imageheight, imagetype, text, url, menuobj)
{
	return new menuObjItem (image, imagemouseover, imagewidth, imageheight, imagetype, text, url, menuobj);
}

function	menuCountChildren (obj)
{
	var fChildren = false, iCount = 0, iTempCount = 0, x;
	
	for (x = 0; x < obj.Children.length; x++)
	{
		if (obj.Children[x].PopupMenu != null) 
		{
			fChildren = true;
			iTempCount = menuCountChildren (obj.Children[x].PopupMenu);
			if (iTempCount > iCount) iCount = iTempCount;
		}
	}
	
	return fChildren?iCount+1:iCount;
}


function	menuSetImage (imageid, image)
{
	if (document.getElementById)
		document.getElementById(imageid).src = image;

	else if (eval ("document."+imageid))
		eval ("document."+imageid+".src = '"+image+"'");
}


function	DrawNavigation (NavWidth)
{
	var x, ImagesWidth, aFlag, moverextra, moutextra;

	for (x = 0; x < menuMaxLevels; x++)
		menuDivsDirty[x] = false;

	//work out how big the spacers need to be
	menuNavWidth = NavWidth;
	ImagesWidth = 0;
	for (x = 0; x < menu_RootObject.Children.length; x++)
		ImagesWidth += menu_RootObject.Children[x].ImageWidth;
		
	menuSpacers = Math.round((NavWidth-ImagesWidth) / (menu_RootObject.Children.length+1));
	
	//Draw the nav images and tags in
	for (x = 0; x < menu_RootObject.Children.length; x++)
	{
		if (menuSpacers > 0) document.write ("<img src=\"images/spacer.gif\" border=\"0\" width=\""+menuSpacers+"\" height=\"1\">");

		aFlag = false;
		if (menu_RootObject.Children[x].URL != null) aFlag = true;
		if (menu_RootObject.Children[x].PopupMenu != null) aFlag = true;
		if (menu_RootObject.Children[x].ImageMouseover != null) aFlag = true;

		if (aFlag) 
		{
			moverextra = ""; moutextra = "";
			if (menu_RootObject.Children[x].ImageMouseover != null)
			{
				moverextra = "menuSetImage ('menuimgroot"+x+"', '"+menu_RootObject.Children[x].ImageMouseover+"');";
				moutextra = "menuSetImage ('menuimgroot"+x+"', '"+menu_RootObject.Children[x].Image+"');";
			}

			document.write ("<a");
			if (menu_RootObject.Children[x].URL != null) document.write (" href=\""+menu_RootObject.Children[x].URL+"\"");
			else										 document.write (" href=\"void(0);\"");
			if (menu_RootObject.Children[x].PopupMenu != null) document.write (" onMouseOver=\"menuDrawPopup('menu_RootObject', 'Children["+x+"]');"+moverextra+"\" onMouseOut=\"menuClosePopup ('menu_RootObject', 'Children["+x+"]', false, 200);"+moutextra+"\"");
			else											   document.write (" onMouseOver=\""+moverextra+"\" onMouseOut=\""+moutextra+"\"");
			document.write (">");
		}

		document.write ("<img id=\"menuimgroot"+x+"\" name=\"menuimgroot"+x+"\" src=\""+menu_RootObject.Children[x].Image+"\" border=\"0\" width=\""+menu_RootObject.Children[x].ImageWidth+"\" height=\""+menu_RootObject.Children[x].ImageHeight+"\" alt=\""+menu_RootObject.Children[x].Text+"\">");

		if (aFlag) document.write ("</a>");
	}
}

function	setZIndex (styleobj)
{
var high;

	high = 20;
	if (document.getElementById)
	{
		var aDivs = document.getElementsByTagName("DIV");
		for (var x = 0; x < aDivs.length; x++)
			if (aDivs[x].style.zIndex > high) high = aDivs[x].style.zIndex;
	}
	else
	{
		for (var x = 0; x < document.layers.length; x++)
			if (document.layers[x].zIndex > high) high = document.layers[x].zIndex;
	}
	styleobj.zIndex = high+1;
}

function	GetMenuWidth (menuobj)
{
	var iIdx = menuobj.DisplayDiv;
	var tobj;

	if (document.getElementById)	tobj = document.getElementById("menuLayer"+iIdx);
	else if (document.layers)		tobj = document.layers["menuLayer"+iIdx];
	
	if (tobj)
	{
		if (document.getElementById) 	return Number(tobj.offsetWidth);
		else if (document.layers)		return Number(tobj.document.width);
	}
	else return 0;
}

function	menuDrawPopup (parent, child)
{
	var x, layIDX, pObj, cObj, mObj, sContent, iLayX, iLayY, rObj, rChild, pPath;
	var sWidth, flag, tobj, cutidx, tmpstr, pcut, iChildNum;
	
	//Get objects
	pObj = eval(parent);
	cObj = eval(parent+"."+child);
	mObj = eval(parent+"."+child+".PopupMenu");

	//Check for allready open state
	if (mObj.DisplayDiv != null)
	{
		if (document.getElementById)	tobj = document.getElementById("menuLayer"+mObj.DisplayDiv);
		else if (document.layers)		tobj = document.layers["menuLayer"+mObj.DisplayDiv];
		tobj.onmouseover();
		return;
	}
	
	//Get free layer.
	layIDX = -1;
	for (x = 0; x < menuMaxLevels; x++)
		if (!menuDivsDirty[x])
		{
			menuDivsDirty[x] = true;
			layIDX = x;
			break;
		}
	
	//No free layers - see if there is one marked as closing we can destroy	
	if (layIDX == -1)
		for (x = 0; x < menuMaxLevels; x++)
		{
			if (document.getElementById) tobj = document.getElementById("menuLayer"+x);
			else if (document.layers) tobj = document.layers["menuLayer"+x];
				
			if (tobj.menuTimerID != null)
			{
				menuClosePopup (tobj.parentref, tobj.childref, true);
				menuDivsDirty[x] = true;
				layIDX = x;
				break;
			}
		}
			
	if (layIDX == -1) return;

	mObj.DisplayDiv = layIDX;
	
	//build content
	sContent = "<table cellspacing='0' cellpadding='0' border='0'>"
			  +"<tr><td class='"+mObj.CSSClass+"Border' colspan='5'><img src='/images/spacer.gif' border='0' height='1'></td></tr>"
			  +"<tr><td class='"+mObj.CSSClass+"Border'><img src='/images/spacer.gif' border='0' width='1'></td><td class='"+mObj.CSSClass+"Padding' colspan='3'><img src='/images/spacer.gif' border='0' height='4'></td><td class='"+mObj.CSSClass+"Border'><img src='/images/spacer.gif' border='0' width='1'></td></tr>"
		 	  +"<tr><td class='"+mObj.CSSClass+"Border'><img src='/images/spacer.gif' border='0' width='1'></td>"
		 	  +"<td class='"+mObj.CSSClass+"Padding'><img src='/images/spacer.gif' border='0' width='4'></td>"
		 	  +"<td class='"+mObj.CSSClass+"Main' nowrap>"
		 	  
	for (x = 0; x < mObj.Children.length; x++)
	{
		flag = false;
		if (mObj.Children[x].PopupMenu != null) flag = true;
		tags = "onMouseOver=\"menuDrawPopup('"+parent+"."+child+".PopupMenu', 'Children["+x+"]');\" onMouseOut=\"menuClosePopup ('"+parent+"."+child+".PopupMenu', 'Children["+x+"]');\"";
		if (flag)
			sContent = sContent + "<div "+tags+"><table cellspacing='0' cellpadding='0' border='0' width='100%'><tr><td align='left' valign='middle'>";

		if (mObj.Children[x].URL != null)
			sContent = sContent + "<a class='"+mObj.CSSClass+"' href='"+mObj.Children[x].URL+"'"+(flag&&document.layers?" "+tags:"")+">";
		else
			sContent = sContent + "<font class='"+mObj.CSSClass+"'>"
		
		switch (mObj.Children[x].ImageType)
		{
		case 0:
			sContent = sContent + mObj.Children[x].Text;
			break;
		case 1:
			sContent = sContent + "<img src='"+mObj.Children[x].Image+"' border='0'>&nbsp;&nbsp;" + mObj.Children[x].Text
			break;
		case 2:
			sContent = sContent + "<img src='"+mObj.Children[x].Image+"' border='0' alt='"+mObj.Children[x].Text+"'><br>"
			break;
		}

		if (flag) 
		{
			sContent = sContent + "</td><td align='right' valign='middle'>"
			if (document.layers)
			{
				sContent = sContent + "<a "+tags
				if (mObj.Children[x].URL != null) 	sContent = sContent + " href='"+mObj.Children[x].URL+"'"
				else								sContent = sContent + " href='void(0);'"
				sContent = sContent + ">"
			}
			sContent = sContent + "<img src='/images/menupopuparrow.gif' border='0' width='14' height='9'>"+(document.layers?"</a>":"")+"</td></tr></table>"
		}
	
		if (mObj.Children[x].URL != null)
			sContent = sContent + "</a>"
		else
			sContent = sContent + "</font>"
	
		if (flag)
			sContent = sContent + "</div>"
		else
			sContent = sContent + "<br>"
	}
		 			
	sContent = sContent
			  +"</td>"
		 	  +"<td class='"+mObj.CSSClass+"Padding'><img src='/images/spacer.gif' border='0' width='5'></td>"
		 	  +"<td class='"+mObj.CSSClass+"Border'><img src='/images/spacer.gif' border='0' width='1'></td></tr>"
		 	  +"<tr><td class='"+mObj.CSSClass+"Border'><img src='/images/spacer.gif' border='0' width='1'></td><td class='"+mObj.CSSClass+"Padding' colspan='3'><img src='/images/spacer.gif' border='0' height='5'></td><td class='"+mObj.CSSClass+"Border'><img src='/images/spacer.gif' border='0' width='1'></td></tr>"
		 	  +"<tr><td class='"+mObj.CSSClass+"Border' colspan='5'><img src='/images/spacer.gif' border='0' height='1'></td></tr>"
		 	  +"</table>"
		 	  
	//Write layer contents
	if (document.getElementById)		document.getElementById("menuLayer"+layIDX).innerHTML = sContent;
	else if (document.layers)	{
		document.layers["menuLayer"+layIDX].document.open ();
		document.layers["menuLayer"+layIDX].document.write (sContent);
		document.layers["menuLayer"+layIDX].document.close ();
	}
	
	//Workout offsets
	if (document.body) if (document.body.clientWidth) sWidth = Number(eval("document.body.clientWidth"));
	if (window.innerWidth) sWidth = Number(eval("window.innerWidth"));
	if (sWidth < menuNavWidth) sWidth = menuNavWidth;
	
	iLayY = 111;

	pPath = parent+"."+child;
	zindex = 100;
	if (parent != "menu_RootObject")
	{
		cutidx = parent.indexOf (".", parent.indexOf (".")+1);
		pPath = parent.substring (0, cutidx);
		zindex = 50;
	}
	
	cutidx = pPath.indexOf (".");
	rObj = eval (pPath.substring(0, cutidx));
	rChild = eval (pPath);
	
	iLayX = (sWidth/2) - (menuNavWidth/2);
	for (x = 0; x < rObj.Children.length; x++)
	{
		if (rObj.Children[x] == rChild) break;
		iLayX += menuSpacers + rObj.Children[x].ImageWidth;
	}
	iLayX += menuSpacers;

	//Now that we've got the "root menu" position - work out offset for popups (if this is).
	if (parent != "menu_RootObject")
	{
		cutidx = parent.indexOf (".");
		pcut = parent.indexOf (".", cutidx+1);
		while (parent.indexOf (".", cutidx+1) != -1)
		{
			iLayY += 13; //constant space from top of menu to first row
			cutidx = parent.indexOf (".", cutidx+1); //get "popupmenu....."
			window.status = parent+"  "+pcut+"  "+cutidx;
			if (pcut < cutidx)
			{
				tmpstr = parent.substring (pcut+1, cutidx);
				iChildNum = Number(tmpstr.substring (tmpstr.indexOf ("[")+1, tmpstr.indexOf ("]")));
				iLayY += 18*iChildNum; //constant space from top of row to top of next row of text
			}
	
			if (parent.indexOf (".", cutidx+1) != -1) //check if there are any more
			{
				tmpstr = parent.substring (0, parent.indexOf (".", cutidx+1));
				iLayX += GetMenuWidth (eval(tmpstr))-10;
				cutidx = parent.indexOf (".", cutidx+1);
			}
			
			pcut = cutidx;
		}
		tmpstr = child;
		iChildNum = Number(tmpstr.substring (tmpstr.indexOf ("[")+1, tmpstr.indexOf ("]")));
		iLayY += 18*iChildNum; //constant space for row to row as above
		
		iLayX += GetMenuWidth (eval(parent))-10;
	}
	
	if (iLayX + GetMenuWidth (mObj) > sWidth) iLayX = sWidth - GetMenuWidth (mObj);
		
	//Set layer position and properties
	if (document.getElementById)
	{
		document.getElementById("menuLayer"+layIDX).style.top = iLayY+"px";
		document.getElementById("menuLayer"+layIDX).style.left = iLayX+"px";
		setZIndex(document.getElementById("menuLayer"+layIDX).style);
		document.getElementById("menuLayer"+layIDX).style.visibility = "visible";
		tobj = document.getElementById("menuLayer"+layIDX);
	}
	else if (document.layers)
	{
		document.layers["menuLayer"+layIDX].pageX = iLayX;
		document.layers["menuLayer"+layIDX].pageY = iLayY;
		setZIndex(document.layers["menuLayer"+layIDX]);
		document.layers["menuLayer"+layIDX].visibility = 'visible';
		tobj = document.layers["menuLayer"+layIDX];
	}

	//set layer data
	tobj.menuTimerID = null;
	tobj.parentref = parent;
	tobj.childref = child;
	tobj.onmouseover = menuCloseCancel;
	tobj.onmouseout = menuCloseStart;
}

function	menuCloseCancel ()
{
	var pPath, cutidx, pObj, lObj;
	
	clearTimeout (this.menuTimerID);
	this.menuTimerID = null;
	
	//Cancel all parent closings too
	pPath = this.parentref;
	if (pPath != "menu_RootObject")
	{
		cutidx = pPath.indexOf (".");
		while (pPath.indexOf (".", cutidx+1) != -1)
		{
			cutidx = pPath.indexOf (".", cutidx+1); //get "popupmenu....."
			if (pPath.indexOf (".", cutidx+1) != -1) //check if there are any more
			{
				tmpstr = pPath.substring (0, pPath.indexOf (".", cutidx+1));
				pObj = eval(tmpstr);
				if (document.getElementById)	lObj = document.getElementById("menuLayer"+pObj.DisplayDiv);
				else if (document.layers)		lObj = document.layers["menuLayer"+pObj.DisplayDiv];
				clearTimeout (lObj.menuTimerID);
				lObj.menuTimerID = null;
				cutidx = pPath.indexOf (".", cutidx+1);
			}
		}
		pObj = eval(pPath);
		if (document.getElementById)	lObj = document.getElementById("menuLayer"+pObj.DisplayDiv);
		else if (document.layers)		lObj = document.layers["menuLayer"+pObj.DisplayDiv];
		clearTimeout (lObj.menuTimerID);
		lObj.menuTimerID = null;
	}	
}

function	menuCloseStart ()
{
	var pPath, cutidx, pObj, lObj;

	menuClosePopup (this.parentref,this.childref);

	//Start all parent closings too
	pPath = this.parentref;
	if (pPath != "menu_RootObject")
	{
		cutidx = pPath.indexOf (".");
		while (pPath.indexOf (".", cutidx+1) != -1)
		{
			cutidx = pPath.indexOf (".", cutidx+1); //get "popupmenu....."
			if (pPath.indexOf (".", cutidx+1) != -1) //check if there are any more
			{
				tmpstr = pPath.substring (0, pPath.indexOf (".", cutidx+1));
				pObj = eval(tmpstr);
				if (document.getElementById)	lObj = document.getElementById("menuLayer"+pObj.DisplayDiv);
				else if (document.layers)		lObj = document.layers["menuLayer"+pObj.DisplayDiv];
				menuClosePopup (lObj.parentref, lObj.childref);
				cutidx = pPath.indexOf (".", cutidx+1);
			}
		}
		pObj = eval(pPath);
		if (document.getElementById)	lObj = document.getElementById("menuLayer"+pObj.DisplayDiv);
		else if (document.layers)		lObj = document.layers["menuLayer"+pObj.DisplayDiv];
		menuClosePopup (lObj.parentref, lObj.childref);
	}	

}

function	menuClosePopup (parent, child, flag, timeout)
{
	var x, layIDX, pObj, cObj, mObj, sContent, sBackground;

	//Get objects
	mObj = eval(parent+"."+child+".PopupMenu");
	layIDX = mObj.DisplayDiv;
	
	//If we're really shutting
	if (flag)
	{
		//Hide layer
		if (document.getElementById)
		{
			clearTimeout (document.getElementById("menuLayer"+layIDX).menuTimerID);
			document.getElementById("menuLayer"+layIDX).menuTimerID = null;
			document.getElementById("menuLayer"+layIDX).style.visibility = 'hidden';
		}
		else if (document.layers)
		{
			clearTimeout (document.layers["menuLayer"+layIDX].menuTimerID);
			document.layers["menuLayer"+layIDX].menuTimerID = null;
			document.layers["menuLayer"+layIDX].visibility = 'hidden';
		}
	
		//'Clean' layer
		mObj.DisplayDiv = null;
		menuDivsDirty[layIDX] = false;
	}
	//Start timer
	else
	{
		if (arguments.length < 4) timeout = 50;
		if (document.getElementById)
		{
			document.getElementById("menuLayer"+layIDX).menuTimerID = setTimeout ("menuClosePopup ('"+parent+"','"+child+"',true);", timeout);
		}
		else if (document.layers)
		{
			document.layers["menuLayer"+layIDX].menuTimerID = setTimeout ("menuClosePopup ('"+parent+"','"+child+"',true);", timeout);
		}
	}
}