var x="";
var aW=Object();
var aMap=Object();
var aZ=Object();
var aVC=Object();
var elAct=null;
var sLog="";
var elToHide=null;
var iClose=10;
var taf=null;
var tafShow=new TAFFY([]);
var aWList=Object();
var evLast=null;
var sLang="english";
var aLangs=Object();

aLangs["Places to go in"]="Lleoedd i fynd";
aLangs["Walking in"]="Cerdded yng";
aLangs["Cycling in"]="Beicio yng";
aLangs["Horse riding in"]="Marchogaeth yng";
aLangs["Events in"]="Beth sy\u2019 \u2018mlaen yng";
aLangs["Other activities in"]="Gweithgareddau eraill yng";

function i18n(s)
{
	el=document.getElementById("lang");
	if (el!=null)
		sLang=el.value;
		
	if (sLang=="english")
	{
		return s;
	}
	if (aLangs[s]!==undefined)
		return aLangs[s];
		
	return s;
}

function doScale()
{ 
	el=document.getElementById("scale");
	if (el!=null)
	{
		el.style.left=iScaleLeft;
		el.style.top=iScaleTop;

		f=fLen/fPx;

		el.style.width=f+"px";
		el.style.display="block";
	}
}
function getNextTag(el,sTag)
{
	while (el!=null && el.tagName!=sTag)
	{
		el=el.nextSibling;
	}
		
	return el;
}

function getNextDD(el)
{
	while (el!=null && el.tagName!="DD")
	{
		el=el.nextSibling;
	}
		
	return el;
}
var aClose=Object();
	
function getCloseWoods(wood)
{
	try
	{
		for (wd=0;wd<aWList[wood]["j"].length;wd++)
		{
			if (aClose[aWList[wood]["j"][wd]]==null)
			{
				aClose[aWList[wood]["j"][wd]]=aWList[wood]["j"][wd];
				getCloseWoods(aWList[wood]["j"][wd]);
			}
		}
	}
	catch(e)
	{
	}
}

var aElToHide=Array();
var curDD=null;
function showDT(ev)
{
	el=Event.element(ev);
	elBox=document.getElementById("fortext");
	elDD=getNextDD(el);
	sHTML="";
		
	aClose=Object();

	aClose[aMap[el.id]]=aMap[el.id];
	//aClose[el.id.toLowerCase()]=el.id.toLowerCase();
	//getCloseWoods(el.id.toLowerCase(),aClose);

	getCloseWoods(aMap[el.id],aClose);
	
	if (elToHide!=null)
		hideDT(elToHide);
		
	elToHide=elDD;

	if (elDD==null)
		return;
	
	curTop=0;
	aCloseSort=new Array();
	for (x in aClose)
	{
		aCloseSort[aCloseSort.length]=x;
	}

	hideTT();

	aCloseSort.sort();
	for (x=0;x<aCloseSort.length;x++)
	{
		s=aCloseSort[x];

		if (aZ[aCloseSort[x]]!=1)
		{
			elWIP=document.getElementById("WoodIconPath");
		
			elX=document.getElementById(aCloseSort[x].toLowerCase());

			if (aVC[s]>0)
			{
				elX.style.background="url('"+elWIP.value+"/visiconz.gif') no-repeat";
				sImg="<img src='"+elWIP.value+"/visiconx.gif'>&nbsp;";
			}
			else
			{
				elX.style.background="url('"+elWIP.value+"/woodiconz.gif') no-repeat";
				sImg="";
			}

			elDD=getNextDD(elX);
			sHTML+="<div style='width:172px;position:relative'>"+sImg+elDD.innerHTML+"</div>";

			//if (aVC[s]==1)
			//	sHTML+="There is no "+curAct+" at "+s+".  However, there's lots to do so please come";

			//aElToHide[aElToHide.length]=elDD;
			aElToHide.push(elDD);
		
			curTop+=elDD.offsetHeight-2;
		}
	}
	elBox.innerHTML=sHTML;
}
function hideDTarr()
{
	for (el=0;el<aElToHide.length;el++)
	{
		hideDT(aElToHide[el]);
	}
}

function hideDT(elDD)
{
	elDD.style.display="none";

	elWIP=document.getElementById("WoodIconPath");

	for (el=0;el<aElToHide.length;el++)
	{
		elDT=aElToHide[el].previousSibling;

		while (elDT!=null && elDT.nodeType!=1)
			elDT=elDT.previousSibling;

		if (aVC[elDT.id]>0)
			elDT.style.background="url('"+elWIP.value+"/visiconx.gif') no-repeat";
		else
			elDT.style.background="url('"+elWIP.value+"/woodiconx.gif') no-repeat";

		
		aElToHide[el].style.display="none";
	}
}
function hideDDForce()
{
	return;

	if (curDD!=null)
	{
		curDD.style.display="none";
		curDD=null;
	}
	for (el=0;el<aElToHide.length;el++)
		aElToHide[el].style.display="none";
}
function positionWoods(idWood,x,y,img)
{
	idWoodUL=idWood;
	ar=taf.get({w:idWoodUL});

	if (ar.length==0) // this stops any woods being displayed that don't have parameters
	{
		return;
	}

	idWood=idWood.toLowerCase();

	aMap[idWood]=idWoodUL; // map lower and upper case wood names for use in get close woods.

	//el=document.getElementById(idWoodUL);
	el=document.getElementById(idWood);
	if (el==null)
	{
		return;
	}
	el.style.cursor="pointer";
	//el.onmouseover=function anonymous(){showDTAlt(this)};
	el.onmouseout=function anonymous(){hideTT()};
	//el.onfocus=function anonymous(){showDTAlt(this)};
	el.onblur=function anonymous(){hideTT()};
	el.tabIndex=0;
		
	if (x<=0)
	{
		el.parentNode.removeChild(el);
		return;
	}

	el.style.position="absolute";
	var left=(x-xOrg)/fPx-ffX;
	var top=imgHt-(y-yOrg)/fPx-ffY;
	el.style.left=left+"px";
	el.style.top=top+"px";

	taf.update({x:left,y:top},{w:idWoodUL});

	if (!(left==0 && top==0))
	{	
		aWList[idWoodUL]=new Object();
		aWList[idWoodUL]["x"]=left;
		aWList[idWoodUL]["y"]=top;
		/*aWList[idWood]=new Object();
		aWList[idWood]["x"]=left;
		aWList[idWood]["y"]=top;*/
	}

	if ((x>0 && y>0) && (top<imgHt && left<imgWidth-16) && (left>0 && top>0))
	{
		//el.onmousedown=function anonymous(){showDT(this)};
		//el.onkeydown=function anonymous(){showDT(this)};
		////el.onmouseover=function anonymous(){showWoodName(this)};
		////el.style.display="inline";
		el.style.display="block";

		if (img!="")
		{
			elImg=document.getElementById(idWoodUL+"image");
			if (elImg==null)
			{
				return;
			}
			elImg.style.display="block";			
			elImg.src="/images/"+img+"/$file/"+img;
			if (elImg.width>elImg.height)
				elImg.style.width="50%";
			else
				elImg.style.width="30%";
		}
	}
	else
	{
		el.parentNode.removeChild(el);
	}
}

var lastAct=getCookie("lastact");
var curAct="ptg"

function showWood(wood,bShow)
{
	elWood=document.getElementById(wood);
	if (elWood==null)
	{
		return;
	}
	if (bShow)
	{
		elWood.previousSibling.style.display="none";

		if (elWood.style.left!=0 || elWood.style.top!=0)
		{
			elWood.style.display="block";
		}
	}
	else
	{
		aZ[elWood.id]=1;
		// why previous sibling? not sure this is right
		if (elWood.previousSibling!=null && elWood.previousSibling.style!=null)
		{
			//elWood.previousSibling.style.display="none";
		}
		elWood.style.display="none";
	}
}
function hideshow(id,sD)
{
	el=document.getElementById("ah"+id);
	if (el!=null)
	{
		el.style.display=sD;
	}
}
function sh()
{
	var iCntTot=0;
	var iCntThisWood=0;

	aZ=Object();

	taf.forEach(function (f,n) {hideshow(f.id,"none")});
	tafShow.forEach(function (f,n) {hideshow(f.id,"none")});
	tafShow=new TAFFY([]);
	// This is called in response to a change in the criteria used.
	// It goes through each wood in turn seeing if any meet the criteria
	// If none do then the wood is hidden otherwise it is displayed
	//alert("current activity "+curAct);
	for (woodUL in aWList)
	{
		if (curAct=="ptg")
		{		
			ar=taf.get({w:woodUL,t:{"has":curAct}});	
		}
		else if (curAct=="event")
		{
				o=new Object();
				o.w=woodUL;
				o.t={"has":curAct};
				gs=Array();
				if (document.getElementById("e1").checked)
					gs.push("nw");
				if (document.getElementById("e2").checked)
					gs.push("'nm");
				if (document.getElementById("e3").checked)
					gs.push("n3m");
				if (document.getElementById("e4").checked)
					gs.push("n6m");
				o.whn=gs;
				ar=taf.get(o);	
		}
		else if (curAct=="othact")
		{
				o=new Object();
				o.w=woodUL;
				o.t={"has":curAct};
				gs=Array();
				if (document.getElementById("o1").checked)
					gs.push("forestdrive.gif");
				if (document.getElementById("o2").checked)
					gs.push("fishing.gif");
				if (document.getElementById("o3").checked)
					gs.push("camping.gif");
				if (document.getElementById("o4").checked)
					gs.push("orienteering.gif");
				if (document.getElementById("o5").checked)
					gs.push("wildlifeactivities.gif");
				if (document.getElementById("o6").checked)
					gs.push("arts.gif");
				if (document.getElementById("o7").checked)
					gs.push("playarea.gif");
				if (document.getElementById("o8").checked)
					gs.push("watersports.gif");
				if (document.getElementById("o9").checked)
					gs.push("educational.gif");
				if (document.getElementById("o10").checked)
					gs.push("arboretum.gif");
				if (document.getElementById("o11").checked)
					gs.push("otheractivities.gif");
				o.oa={"has":gs};
				ar=taf.get(o);	
		}
		else if (curAct=="horseriding")
		{
			ar=taf.get({w:woodUL,t:{"has":curAct}});	
		}
		else if (curAct=="walking")
		{		
			if (document.getElementById("graded").checked)
				ar=taf.get({w:woodUL,t:{"has":curAct}});	
			else
			{
				o=new Object();
				o.w=woodUL;
				o.t={"has":curAct};
				gs=Array();
				if (document.getElementById("g1").checked)
					gs.push("easyaccess.gif");
				if (document.getElementById("g2").checked)
					gs.push("gradienteasy.gif");
				if (document.getElementById("g3").checked)
					gs.push("gradientmoderate.gif");
				if (document.getElementById("g4").checked)
					gs.push("gradientdemanding.gif");
				o.g=gs;
				ar=taf.get(o);	
			}
		}
		else if (curAct=="cycling")		
		{
			if (document.getElementById("cgraded").checked)
				ar=taf.get({w:woodUL,t:{"has":curAct}});	
			else
			{
				o=new Object();
				o.w=woodUL;
				o.t={"has":curAct};
				gs=Array();
				if (document.getElementById("c1").checked)
					gs.push("cyclingeasy.gif");
				if (document.getElementById("c2").checked)
					gs.push("cyclingmoderate.gif");
				if (document.getElementById("c3").checked)
					gs.push("cyclingdifficult.gif");
				if (document.getElementById("c4").checked)
					gs.push("cyclingsevere.gif");
				if (document.getElementById("c5").checked)
					gs.push("cyclingextreme.gif");
				o.g=gs;
				ar=taf.get(o);	
			}
		}
		wood=woodUL.toLowerCase();
		//wood=woodUL;
		if (ar.length==0)
		{
			// if its a vc then we still want to show it
			/*if (aVC[woodUL]>0)
			{
				showWood(wood,true,woodUL);
				aVC[woodUL]=ar.length+1;
			}
			else*/
				showWood(wood,false);
		}
		else
		{
			showWood(wood,true,woodUL);
			if (aVC[woodUL]>0)
				aVC[woodUL]=ar.length+1;
		}
		for (i=0;i<ar.length;i++)
		{
			hideshow(ar[i].id,"block");
			sId=ar[i].id;
			tafShow.insert([{id:sId}]);
		}
	}
}
function shOld()
{
	var iCntTot=0;
	var iCntThisWood=0;
	
	// This is called in response to a change in the criteria used.
	// It goes through each wood in turn seeing if any meet the criteria
	// If none do then the wood is hidden otherwise it is displayed
	//alert("current activity "+curAct);
	for (woodUL in aW)
	{
		wood=woodUL.toLowerCase();

		if (aW[wood]!=null)
		{
			if (aW[wood][curAct]==null)
			{
				showWood(wood,false);
			}
			else
			{
				iCntThisWood=checkWood(wood);
				iCntTot+=iCntThisWood;
				if (iCntThisWood==0)
					showWood(wood,false);
				else
				{
					showWood(wood,true);
				}
			}
		}
	}
	//window.status="Total number of places shown: "+iCntTot;
}
function changeAct(s)
{
	var sNew="";

	el=document.getElementById("act"+curAct);
	if (el!=null)
		el.style.display="none";
	curAct=s;
	setCookie("lastact",s);

	el=document.getElementById("act"+curAct);
	if (el!=null)
	{
		el.style.display="block";
		el.style.height=el.offsetHeight;
	}
	if (s=="othact")
		sNew=i18n("Other activities in");
	else if (s=="ptg")
		sNew=i18n("Places to go in");
	else if (s=="horseriding")
		sNew=i18n("Horse riding in");
	else if (s=="event")
		sNew=i18n("Events in");
	else if (s=="walking")
		sNew=i18n("Walking in");
	else if (s=="cycling")
		sNew=i18n("Cycling in");
		
	sNew="<span>"+sNew+" </span>";
	el=document.getElementById("curact");
	if (el!=null)
	{
		el.removeChild(el.lastChild);

		el.innerHTML=sNew;
	}
	if (elAct!=null)
	{
		elAct.style.display="block";
	}
	
	el=document.getElementById(s+"hide");
	if (el!=null)
	{
		el.style.display="none";

		elAct=el;
	}

	el=document.getElementById("ptitle");
	if (el!=null)
		el.innerHTML=sNew;
	
	sh();
}
function setParam(a)
{
	// This is called when each link is added.  It notes the activities and gradient
	// together with the wood (for categorisation) and the id (to show/hide)
	if (a["t"]=="")
	{
		el=document.getElementById("ah"+a["id"]);
		if (el!=null)
			el.style.display="none";
		return;
	}

	idx=a["w"].toLowerCase();
	if (idx=="")
	{
		return;
	}

	if (aW[idx]==null)
	{
		aW[idx]=Object();
	}
	recordActivity(a,idx);
}

/*function spx(id)
{
	a=Object();
	el=document.getElementById("ah"+id);
	if (el!=null)
	{
		if (el.getAttribute("w")!=undefined)
		{
			a["w"]=el.getAttribute("w");
		}
		if (el.getAttribute("ptg")!=undefined)
		{
			a["ptg"]=el.getAttribute("ptg");
		}
		if (el.getAttribute("g")!=undefined)
		{
			a["g"]=el.getAttribute("g");
		}
		if (el.getAttribute("eag")!=undefined)
		{
			a["eag"]=el.getAttribute("eag");
		}
		if (el.getAttribute("fd")!=undefined)
		{
			a["fd"]=el.getAttribute("fd");
		}
		if (el.getAttribute("fsh")!=undefined)
		{
			a["fsh"]=el.getAttribute("fsh");
		}
		if (el.getAttribute("cmp")!=undefined)
		{
			a["cmp"]=el.getAttribute("cmp");
		}
		if (el.getAttribute("ori")!=undefined)
		{
			a["ori"]=el.getAttribute("ori");
		}
		if (el.getAttribute("wld")!=undefined)
		{
			a["wld"]=el.getAttribute("wld");
		}
		if (el.getAttribute("art")!=undefined)
		{
			a["art"]=el.getAttribute("art");
		}
		if (el.getAttribute("pas")!=undefined)
		{
			a["pas"]=el.getAttribute("pas");
		}
		if (el.getAttribute("wat")!=undefined)
		{
			a["wat"]=el.getAttribute("wat");
		}
		if (el.getAttribute("edu")!=undefined)
		{
			a["edu"]=el.getAttribute("edu");
		}
		if (el.getAttribute("arb")!=undefined)
		{
			a["arb"]=el.getAttribute("arb");
		}
		if (el.getAttribute("oact")!=undefined)
		{
			a["oact"]=el.getAttribute("oact");
		}
		if (el.getAttribute("whn")!=undefined)
		{
			a["whn"]=el.getAttribute("whn");
		}
		if (el.getAttribute("sp")!=undefined)
		{
			a["sp"]=el.getAttribute("sp");
		}
		if (el.getAttribute("t")!=undefined)
		{
			a["t"]=el.getAttribute("t");
		}
		if (el.getAttribute("fd")!=undefined)
		{
			a["fd"]=el.getAttribute("fd");
		}
	}
	sp(a);
}*/

function sp(a)
{
	if (taf==null)
	{
		//taf=new TAFFY({t:'ptg',ptg:'',id:'6.1.1',w:'Abbeyford'});
		//ar=taf.get({t:"ptg"});
		//alert(ar.length);
		taf = new TAFFY([a]);
		//aWList[a.w]=a.w
	}
	else
	{
		taf.insert([a]);
		//aWList[a.w]=a.w;
	}
}

function recordEvent(a,idx)
{
}
function recordActivity(a,idx)
{
}
function recordActivityOld(a,idx)
{
	aTypes=a["t"].split(";");
	for (actTypeIdx in aTypes)
	{
		actType=aTypes[actTypeIdx];
		if (aW[idx][actType]==null)
		{
			aW[idx][actType]=Object();
		}
		l=aW[idx][actType].length
		aW[idx][actType][l]=a;
	}
}
function checkLink(wood,link)
{
	var bHide=true; // show or hide this link

	aF=aCfg[curAct]["fs"];
	for (i=0;i<aF.length;i++)
	{
		// get the id of the checkboxes from the config (also define the things to look for)
		id=aF[i];
		el=document.getElementById(id);
		// only worry about criteria checked
		if (el!=null && el.checked)
		{			
			// Get the criteria from the config
			aCri=aCfg[curAct][id];
			
			// get the field that we're looking at
			fld=aCri["f"];

			// now get the value that we're after 
			for (val in aCri["v"])
			{
				//alert(aW[wood][curAct][link]["t"]+" - "+aW[wood][curAct][link][fld]+" - "+fld+" - "+aCri["v"][val]);
				if (aW[wood][curAct][link][fld]==aCri["v"][val])
				{
					bHide=false;
				}
			}
		}
	}
	//alert(aW[wood][link]["id"]);
	elLnk=document.getElementById("ah"+aW[wood][curAct][link]["id"]);
	if (elLnk!=null)
	{
		if (bHide)
		{
			elLnk.style.display="none";
			return 0;
		}
		else
		{
			//elLnk.style.display="inline";
			elLnk.style.display="block";
			return 1;
		}
	}
	return 0;
}
function checkWood(wood)
{
	// This function counts all of the links within the wood that should be shown.
	// It does this by working out whether each link should be shown
	i=0;
	for (acts in aW[wood])
	{
		for (link in aW[wood][acts])
		{	
			elLnk=document.getElementById("ah"+aW[wood][acts][link]["id"]);
			if (elLnk!=null)
				elLnk.style.display="none";
		}
	}
	for (link in aW[wood][curAct])
	{
		i+=checkLink(wood,link);
	}
	//debug(wood+" "+i);
	return i;
}

function removeDudWoods()
{
	for (wood in aWList)
	{
		el=document.getElementById(wood);
		if (el==null)
		{
			aWList[wood]=null;
		}
		else
		{
			if ((el.style.left==0 && el.style.top==0) || (parseInt(el.style.left)>imgWidth || parseInt(el.style.top)>imgHt))
			{
				aWList[wood]=null;
			}
		}		
	}
}


function coaleseWoods()
{
	for (wood in aWList)
	{
		try
		{
			bStarted=false;
			for (woodCmp in aWList)
			{
				if (aWList[woodCmp]!=null && woodCmp!=wood)
				{
					// 12 pixel gaps between woods means they're shown together
					if (Math.abs(aWList[woodCmp]["x"]-aWList[wood]["x"])<iClose && 
						Math.abs(aWList[woodCmp]["y"]-aWList[wood]["y"])<iClose)
					{
						if (aWList[wood]["j"]==null)
							aWList[wood]["j"]=Array();
						aWList[wood]["j"].push(woodCmp);
						//l=aW[wood]["j"].length;
						//aW[wood]["j"][l]=woodCmp;
					}
				}
			}
		}
		catch(e)
		{
		}
	}
}
function showWoodName(el)
{
	return;

	elName=document.getElementById("forname");
	elName.innerHTML=el.id;	
}

function showDTAlt(ev)
{
	el=Event.element(ev);
	if (el.tagName=="DT")
	{
		elMap=document.getElementById("mapdiv");
		// emulate tool tips
		elTT=document.getElementById("ToolTip");
		elTT.innerHTML=el.id;
		elTT.style.display="block";
		elTT.style.visibility="visible";
		elTT.style.left=Event.pointerX(ev)+10+"px";
		elTT.style.top=Event.pointerY(ev)+6+"px";

		//elTT.style.left=parseInt(el.style.left)+20+elMap.offsetLeft;
		//elTT.style.top=parseInt(el.style.top)+12+elMap.offsetTop;
	}	
}
function hideEl(el)
{
	el.style.display="none";
}
function hideTT()
{
	elTT=document.getElementById("ToolTip");
	elTT.style.display="none";
}

function doEnable()
{
	el=document.getElementById("graded");
	if (el.checked)
		el.onclick();
	el=document.getElementById("marked");
	if (el.checked)
		el.onclick();
}
function doVC()
{
	ar=taf.get({vc:1});

	for (i=0;i<ar.length;i++)
	{
		elWIP=document.getElementById("WoodIconPath");
		
		elX=document.getElementById(ar[i].w);

		elX.style.background="url('"+elWIP.value+"/visiconx.gif') no-repeat";
		
		aVC[ar[i].w]=1;
	}
}
function onloadfuncs()
{
	//doVC();
	doScale();
	//removeDudWoods();
	//sh();
	doEnable();
	sh();
}