// *** COMMON CROSS-BROWSER COMPATIBILITY CODE ***

var isDOM=document.getElementById?1:0;
var isIE=document.all?1:0;
var isNS4=navigator.appName=='Netscape'&&!isDOM?1:0;
var isIE4=isIE&&!isDOM?1:0;
var isOp=window.opera?1:0;
var isDyn=isDOM||isIE||isNS4;

function getRef(id, par) {
	par=!par?document:(par.navigator?par.document:par);
	return (isIE ? par.all[id] :
		(isDOM ? (par.getElementById?par:par.ownerDocument).getElementById(id) :
			(isNS4 ? par.layers[id] : null)));
}

function getSty(id, par) {
	var r=getRef(id, par);
	return r?(isNS4?r:r.style):null;
}

if (!window.LayerObj) var LayerObj = new Function('id', 'par', 'this.ref=getRef(id, par); this.sty=getSty(id, par); return this');

function getLyr(id, par) { return new LayerObj(id, par) }

function LyrFn(fn, fc) {
	LayerObj.prototype[fn] = new Function('var a=arguments,p=a[0],px=isNS4||isOp?0:"px"; ' + 'with (this) { '+fc+' }');
}

LyrFn('x','if (!isNaN(p)) sty.left=p+px; else return parseInt(sty.left)');
LyrFn('y','if (!isNaN(p)) sty.top=p+px; else return parseInt(sty.top)');
LyrFn('vis','sty.visibility=p');
LyrFn('bgColor','if (isNS4) sty.bgColor=p?p:null; ' + 'else sty.background=p?p:"transparent"');
LyrFn('bgImage','if (isNS4) sty.background.src=p?p:null; ' + 'else sty.background=p?"url("+p+")":"transparent"');
LyrFn('clip','if (isNS4) with(sty.clip){left=a[0];top=a[1];right=a[2];bottom=a[3]} ' + 'else sty.clip="rect("+a[1]+"px "+a[2]+"px "+a[3]+"px "+a[0]+"px)" ');
LyrFn('write','if (isNS4) with (ref.document){write(p);close()} else ref.innerHTML=p');
LyrFn('alpha','var f=ref.filters,d=(p==null); if (f) {' + 'if (!d&&sty.filter.indexOf("alpha")==-1) sty.filter+=" alpha(opacity="+p+")"; ' +
	'else if (f.length&&f.alpha) with(f.alpha){if(d)enabled=false;else{opacity=p;enabled=true}} }' + 'else if (isDOM) sty.MozOpacity=d?"":p+"%"');

function setLyr(lVis, docW, par) {
	if (!setLyr.seq) setLyr.seq=0;
	if (!docW) docW=0;
	var obj = (!par ? (isNS4 ? window : document.body) : (!isNS4 && par.navigator ? par.document.body : par));
	var IA='insertAdjacentHTML', AC='appendChild', newID='_js_layer_'+setLyr.seq++;
	
	if (obj[IA]) obj[IA]('beforeEnd', '<div id="'+newID+'" style="position:absolute"></div>');
	else if (obj[AC]) {
		var newL=document.createElement('div');
		obj[AC](newL); newL.id=newID; newL.style.position='absolute';
	}
	else if (isNS4)
	{
		var newL=new Layer(docW, obj);
		newID=newL.id;
	}
	
	var lObj=getLyr(newID, par);
	with (lObj) if (ref) { vis(lVis); x(0); y(0); sty.width=docW+(isNS4?0:'px') }
	return lObj;
}

var CSSmode=document.compatMode;
CSSmode=(CSSmode&&CSSmode.indexOf('CSS')!=-1)||isDOM&&!isIE||isOp?1:0;

if (!window.page) var page = { win: window, minW: 0, minH: 0, MS: isIE&&!isOp, db: CSSmode?'documentElement':'body' }

page.winW=function()
	{ with (this) return Math.max(minW, MS?win.document[db].clientWidth:win.innerWidth) }
page.winH=function()
	{ with (this) return Math.max(minH, MS?win.document[db].clientHeight:win.innerHeight) }

page.scrollX=function()
	{ with (this) return MS?win.document[db].scrollLeft:win.pageXOffset }
page.scrollY=function()
	{ with (this) return MS?win.document[db].scrollTop:win.pageYOffset }

// *** MOUSE EVENT CONTROL FUNCTIONS ***

function popOver(mN, iN) {
	with (this) {
		clearTimeout(hideTimer);
		overM = mN;
		overI = iN;
		if (iN && this.onmouseover) onmouseover(mN, iN);
		
		litOld = litNow;
		litNow = new Array();
		var litM = mN, litI = iN;
		while(1) {
			litNow[litM] = litI;
			if (litM == 'root') break;
			litI = menu[litM][0].parentItem;
			litM = menu[litM][0].parentMenu;
		}

		var same = true;
		for (var z in menu) if (litNow[z] != litOld[z]) same = false;
		if (same) return;
		
		clearTimeout(showTimer);
			
		for (thisM in menu) with (menu[thisM][0]) {
			if (!lyr) continue;
			
			litI = litNow[thisM];
			oldI = litOld[thisM];
			
			if (litI && (litI != oldI)) changeCol(thisM, litI, true);

			if (oldI && (oldI != litI)) changeCol(thisM, oldI, false);
			
			if (litI && !visNow && (thisM != 'root')) {
				showMenu(thisM);
				visNow = true;
			}

			if (isNaN(litI) && visNow) {
				hideMenu(thisM);
				visNow = false;
			}
		}

		nextMenu = '';
		if ((menu[mN][iN].type == 'sm:') && !menu[mN][0].subsOnClick) {
			var targ = menu[mN][iN].href, lyrM = menu[mN][0].lyr;
			
			var showStr = 'with ('+myName+') { menu.'+targ+'[0].visNow = true; ' + 'position("'+targ+'"); showMenu("'+targ+'") }';
			nextMenu = targ;
			if (showDelay) showTimer = setTimeout(showStr, showDelay);
			else eval(showStr);
		}
	}
}


function popOut(mN, iN) {
	with (this) {
		if ((mN != overM) || (iN != overI)) return;
		
		if (this.onmouseout) onmouseout(mN, iN);
		
		var thisI = menu[mN][iN];
		
		if (thisI.href != nextMenu) {
			clearTimeout(showTimer);
			nextMenu = '';
		}

		if (hideDelay) {
			var delay = ((mN == 'root') && (thisI.type != 'sm:')) ? 50 : hideDelay;
			hideTimer = setTimeout(myName + '.over("root", 0)', delay);
		}

		overM = 'root';
		overI = 0;
	}
}

function popClick(mN, iN) {
	with (this) {
		if (this.onclick) onclick(mN, iN);
		
		var thisI = menu[mN][iN], hideM = true;
		
		with (thisI) switch (type) {
			case 'sm:': {
				if (menu[overM][0].subsOnClick) {
					menu[href][0].visNow = true;
					position(href);
					showMenu(href);
					hideM = false;
				}
				break;
			}
			case 'js:': { eval(href); break }
			case '': type = 'window';
			default: if (href) eval(type + '.location.href = "' + href + '"');
		}

		if (hideM) over('root', 0);
	}
}

function popChangeCol(mN, iN, isOver) {
	with (this.menu[mN][iN]) {
		if (!lyr || !lyr.ref) return;
		
		var col = isOver?overCol:outCol;
		var bgFn = (col.indexOf('.')==-1) ? 'bgColor' : 'bgImage';
		if (isNS4) lyr[bgFn](col);
		
		if ((overClass != outClass) || (outBorder != overBorder)) with (lyr) {
			if (isNS4) write(this.getHTML(mN, iN, isOver));
			else {
				ref.className = (isOver ? overBorder : outBorder);
				var chl = (isDOM ? ref.childNodes : ref.children)
				if (chl) for (var i = 0; i < chl.length; i++) chl[i].className = isOver?overClass:outClass;
			}
		}

		if (!isNS4) lyr[bgFn](col);
		
		if (outAlpha != overAlpha) lyr.alpha(isOver ? overAlpha : outAlpha);
	}
}

function popPosition(posMN) {
	with (this) {
		for (mN in menu) {
			if (posMN && (posMN != mN)) continue;
			with (menu[mN][0]) {
				if (!lyr || !lyr.ref || !visNow) continue;
				
				var pM, pI, newX = eval(offX), newY = eval(offY);
				if (mN != 'root') {
					pM = menu[parentMenu];
					pI = pM[parentItem].lyr;
					if (!pI) continue;
				}

				var eP = eval(par);
				var pW = (eP && eP.navigator ? eP : window);
				
				with (pW.page) var sX=scrollX(), wX=sX+winW(), sY=scrollY(), wY=winH()+sY;
				wX = isNaN(wX)||!wX ? 9999 : wX;
				wY = isNaN(wY)||!wY ? 9999 : wY;
				
				if (pM && typeof(offX)=='number') newX = Math.max(sX, Math.min(newX+pM[0].lyr.x()+pI.x(), wX-menuW-(isIE?5:20)));
				if (pM && typeof(offY)=='number') newY = Math.max(sY, Math.min(newY+pM[0].lyr.y()+pI.y(), wY-menuH-(isIE?5:20)));
				
				lyr.x(newX);
				lyr.y(newY);
			}
		}
	}
}

// *** MENU OBJECT CONSTRUCTION FUNCTIONS ***

function addProps(obj, data, names, addNull) {
	for (var i = 0; i < names.length; i++) if(i < data.length || addNull) obj[names[i]] = data[i];
}

function ItemStyle() {
	var names = ['len', 'spacing', 'popInd', 'popPos', 'pad', 'outCol', 'overCol', 'outClass', 'overClass', 'outBorder', 'overBorder', 'outAlpha', 'overAlpha', 'normCursor', 'nullCursor'];
	addProps(this, arguments, names, true);
}

function popStartMenu(mName) {
	with (this) {
		if (!menu[mName]) { menu[mName] = new Array(); menu[mName][0] = new Object(); }
		
		actMenu = menu[mName];
		aM = actMenu[0];
		actMenu.length = 1;
		
		var names = ['isVert', 'isVert', 'offX','offY', 'width', 'itemSty', 'par', 'parentMenu', 'parentItem', 'visNow', 'oncreate', 'subsOnClick'];
		addProps(aM, arguments, names, true);
		
		aM.extraHTML = '';
		aM.menuW = aM.menuH = 0;
		
		if (!aM.lyr) aM.lyr = null;
		
		if (mName == 'root') menu.root[0].oncreate = new Function('this.visNow=true; ' +
		myName + '.position("root"); this.lyr.vis("visible")');
	}
}

function popAddItem() {
	with (this) with (actMenu[0]) {
		var aI = actMenu[actMenu.length] = new Object();
		
		var names = ['text', 'href', 'type', 'itemSty', 'len', 'spacing', 'popInd', 'popPos', 'pad', 'outCol', 'overCol', 'outClass', 'overClass', 'outBorder', 'overBorder',
			'outAlpha', 'overAlpha', 'normCursor', 'nullCursor', 'iX', 'iY', 'iW', 'iH', 'lyr'];
		addProps(aI, arguments, names, true);
		
		var iSty = (arguments[3] ? arguments[3] : actMenu[0].itemSty);
		for (prop in iSty) if (aI[prop]+'' == 'undefined') aI[prop] = iSty[prop];
		
		if (aI.outBorder) { if (isNS4) aI.pad++; }

		aI.iW = (isVert ? width : aI.len);
		aI.iH = (isVert ? aI.len : width);
		
		var lastGap = (actMenu.length > 2) ? actMenu[actMenu.length - 2].spacing : 0;
		
		var spc = ((actMenu.length > 2) && aI.outBorder ? 1 : 0);
		
		if (isVert) {
			menuH += lastGap - spc;
			aI.iX = 0; aI.iY = menuH;
			menuW = width; menuH += aI.iH;
		}
		else {
			menuW += lastGap - spc;
			aI.iX = menuW; aI.iY = 0;
			menuW += aI.iW; menuH = width;
		}

		if (aI.outBorder && CSSmode) {
			aI.iW -= 2;
			aI.iH -= 2;
		}
	}
}

// *** MAIN MENU CREATION/UPDATE FUNCTIONS ***

function popGetHTML(mN, iN, isOver) {
	with (this) {
		var itemStr = '';
		with (menu[mN][iN]) {
			var textClass = (isOver ? overClass : outClass);
			
			if ((type == 'sm:') && popInd) {
				if (isNS4) itemStr += '<layer class="' + textClass + '" left="'+ ((popPos+iW)%iW) + '" top="' + pad + '" height="' + (iH-2*pad) + '">' + popInd + '</layer>';
				else itemStr += '<div class="' + textClass + '" style="position: absolute; left: ' + ((popPos+iW)%iW) + 'px; top: ' + pad + 'px; height: ' + (iH-2*pad) + 'px">' + popInd + '</div>';
			}

			if (isNS4) itemStr += (outBorder ? '<span class="' + (isOver?overBorder:outBorder) + '"><spacer type="block" width="' + (iW-8) + '" height="' + (iH-8) + '"></span>' : '') +
				'<layer left="' + pad + '" top="' + pad + '" width="' + (iW-2*pad) + '" height="' + (iH-2*pad) + '"><a class="' + textClass + '" href="#" ' +
				'onClick="return false" onMouseOver="status=\'\'; ' + myName + '.over(\'' + mN + '\',' + iN + '); return true">' + text + '</a></layer>';
			
			else itemStr += '<div class="' + textClass + '" style="position: absolute; left: ' + pad + 'px; top: ' + pad + 'px; width: ' + (iW-2*pad) + 'px; height: ' + (iH-2*pad) + 'px">' + text + '</div>';
		}
		return itemStr;
	}
}

function popUpdate(docWrite, upMN) {
	with (this) {
		if (!isDyn) return;
		
		for (mN in menu) with (menu[mN][0]) {
			if (upMN && (upMN != mN)) continue;
			
			var str = '';
			
			for (var iN = 1; iN < menu[mN].length; iN++) with (menu[mN][iN]) {
				var itemID = myName + '_' + mN + '_' + iN;
				
				var targM = menu[href];
				if (targM && (type == 'sm:')) {
					targM[0].parentMenu = mN;
					targM[0].parentItem = iN;
				}

				var isImg = (outCol.indexOf('.') != -1) ? true : false;
				
				if (!isIE && normCursor=='hand') normCursor = 'pointer';
				
				if (isDOM || isIE4) {
					str += '<div id="' + itemID + '" ' + (outBorder ? 'class="'+outBorder+'" ' : '') + 'style="position: absolute; left: ' + iX + 'px; top: ' + iY + 'px; width: ' + iW +
						'px; height: ' + iH + 'px; z-index: 1000; background: ' + (isImg?'url('+outCol+')':outCol) + ((typeof(outAlpha)=='number') ? '; filter: alpha(opacity='+ outAlpha + '); -moz-opacity: ' +
						(outAlpha/100) : '') + '; cursor: ' + ((type!='sm:' && href) ? normCursor : nullCursor) + '" ';
				}
				else if (isNS4) {
					str += '<layer id="' + itemID + '" left="' + iX + '" top="' + iY + '" width="' + iW + '" height="' + iH + '" z-index="1000" ' +
						(outCol ? (isImg ? 'background="' : 'bgcolor="') + outCol + '" ' : '');
				}

				var evtMN = '(\'' + mN + '\',' + iN + ')"';
				str += 'onMouseOver="' + myName + '.over' + evtMN + ' onMouseOut="' + myName + '.out' + evtMN +
					' onClick="' + myName + '.click' + evtMN + '>' + getHTML(mN, iN, false) + (isNS4 ? '</layer>' : '</div>');
				
			}

			var eP = eval(par);
			
			setTimeout(myName + '.setupRef(' + docWrite + ', "' + mN + '")', 50);
			
			var mVis = visNow ? 'visible' : 'hidden';
			
			if (docWrite) {
				var targFr = (eP && eP.navigator ? eP : window);
				targFr.document.write('<div id="' + myName + '_' + mN + '_Div" style="position: absolute; ' + 'visibility: ' + mVis + '; left: 0px; top: 0px; width: ' + (menuW+2) + 'px; height: ' +
					(menuH+2) + 'px; z-index: 1000">' + str + extraHTML + '</div>');
			}
			else {
				if (!lyr || !lyr.ref) lyr = setLyr(mVis, menuW, eP);
				else if (isIE4) setTimeout(myName + '.menu.' + mN + '[0].lyr.sty.width=' + (menuW+2), 50);
				
				with (lyr) { sty.zIndex = 1000; write(str + extraHTML) }
			}
		}
	}
}

function popSetupRef(docWrite, mN) {
	with (this) with (menu[mN][0]) {
		if (docWrite || !lyr || !lyr.ref) lyr = getLyr(myName + '_' + mN + '_Div', eval(par));
		
		for (var i = 1; i < menu[mN].length; i++) menu[mN][i].lyr = getLyr(myName + '_' + mN + '_' + i, (isNS4?lyr.ref:eval(par)));
		
		if (menu[mN][0].oncreate) oncreate();
	}
}

// *** POPUP MENU MAIN OBJECT CONSTRUCTOR ***

function PopupMenu(myName)
{
	this.myName = myName;
	
	this.showTimer = 0;
	this.hideTimer = 0;
	this.showDelay = 0;
	this.hideDelay = 500;
	this.showMenu = '';
	
	this.menu =  new Array();
	this.litNow = new Array();
	this.litOld = new Array();
	
	this.overM = 'root';
	this.overI = 0;

	this.actMenu = null;

	this.over = popOver;
	this.out = popOut;
	this.changeCol = popChangeCol;
	this.position = popPosition;
	this.click = popClick;
	this.startMenu = popStartMenu;
	this.addItem = popAddItem;
	this.getHTML = popGetHTML;
	this.update = popUpdate;
	this.setupRef = popSetupRef;
 
	this.showMenu = new Function('mName', 'this.menu[mName][0].lyr.vis("visible")');
	this.hideMenu = new Function('mName', 'this.menu[mName][0].lyr.vis("hidden")');
}

// funkce pro relativni pozicovani podle anchoru:
page.elmPos=function(e,p)
{
	var x=0, y=0, w=p?p:this.win;
	
	e=e?(e.substr?(isNS4?w.document.anchors[e]:getRef(e,w)):e):p;
	if (isNS4) {
		if (e&&(e!=p)) {
			x=e.x; y=e.y
		};
		if (p) {
			x+=p.pageX; y+=p.pageY
		}
	}
	else if (e && e.focus && e.href && this.MS && /Mac/.test(navigator.platform)) {
		e.onfocus = new Function('with(event){self.tmpX=clientX-offsetX;' + 'self.tmpY=clientY-offsetY}');
		e.focus();x=tmpX;y=tmpY;e.blur()
	}
	else while(e) {
		x+=e.offsetLeft;y+=e.offsetTop;e=e.offsetParent
	}
	
	return{x:x,y:y};
};