//=============================
//Scripte fur das Mainmenu-Popup
//=============================

var zu;
//Variable fur das aktive Highlight 
var activeImage;  

//hilite-image method
function createHiliteObj(picsrc){
	this.offimg = new Image();
    this.offimg.src = picsrc;
	var picsrc_highimg = picsrc.replace('.lo.', '.hi.');
	this.onimg = new Image();
	this.onimg.src = picsrc_highimg;
	}

//hilite-image method
function createImgObjs(offsrc,onsrc,hisrc){
	this.offimg = new Image();
    this.offimg.src = offsrc;
	this.onimg = new Image();
	this.onimg.src = onsrc;
	if (arguments.length > 2 && hisrc.length > 0) {
		this.hiliteimg = new Image();
		this.hiliteimg.src = hisrc;
		}
	}

//args = name of menuset,Hilite-Toggle (1 = Hilite on, 0 = hilite off) 

function showMenu(whichMenu,whichPic) {
	//show new hilite
	resetHighlight();	
	if(whichPic == 0) showHighlight(whichMenu.imgname);
	//workaround mozilla menuwidth bug
	if(navigator.appVersion.indexOf("MSIE") != -1){
		document.getElementById("main_sub_container").style.width = 500 + "px";
		}
	else{
		document.getElementById("main_sub_container").style.width = "auto";
	}
	
	//writing HTML content
	document.getElementById("main_sub_container").innerHTML = whichMenu.completeMenuHTML;	
	document.getElementById("main_sub_container").style.display = "block";	
	
	//check img-position to get menu position
	if(whichMenu.imgPosChecked == 0) {
		whichMenu.menuPos = eval("document." + whichMenu.imgname + ".offsetLeft");
		whichMenu.menuWidth = document.getElementById("main_sub_list").offsetWidth;
		var currWidth = whichMenu.menuPos + whichMenu.menuWidth;
		if(currWidth >= 780){
	 	whichMenu.menuPos = (780 - whichMenu.menuWidth + 10);
		}
		else{
			//left indent
			whichMenu.menuPos = whichMenu.menuPos + 6;
		}
		whichMenu.imgPosChecked = 1;
	}
	
	//positioning of menu	
	document.getElementById("main_sub_container").style.width = whichMenu.menuWidth + "px";
	document.getElementById("main_sub_container").style.left = whichMenu.menuPos + "px";		
	document.getElementById("main_sub_container").style.visibility = "visible";
	
	//disable timeout
	window.clearTimeout(zu);
	
}


function dropdown_mouseEnter() {
	window.clearTimeout(zu);
	}

function dropdown_mouseLeave(whichMenu) {
	switch (whichMenu) {
			case 'main':
			zu = window.setTimeout("menuCollaps()",50);
			break;
			case 'sub':
			zu = window.setTimeout("submenuCollaps()",50);
			break;
			}			
	}

function showHighlight(menupic){
	document.images[menupic].src = menupic.onimg.src;
	activeImage = menupic;	
}

function resetHighlight(){
	if(activeImage) document.images[activeImage].src = activeImage.offimg.src;
}

function menuCollaps(){
		//zurucksetzen des highlights;
		resetHighlight();
		//verstecken des popup-menues
		window.clearTimeout(zu);
		document.getElementById("main_sub_container").style.visibility="hidden";
		document.getElementById("main_sub_container").style.display="none";		
	}

//================================================================
//Scripts for Subnav-Menu
//===============================================================

//creating Subnav-Menu
function subMenu(whichMenu,whichImg,picsrc){
	//creating mouseover-Images
	this.imgname = new Object(whichImg);
	this.imgname.createHiliteImages = createHiliteObj;
	this.imgname.createHiliteImages(picsrc);
	//props for checking img-position
	this.imgPosChecked = 0;
	this.menuPos = 0;
	this.menuTop = 0;
	this.imgHeight = 0;
	this.imgWidth = 0;
	//reading Menu-Array, writing HTML-Codes
	this.activeMenu = eval(whichMenu);
	this.subMenuItemsList = "";
	if(this.activeMenu != 0) {
		for(var i = 0; i < this.activeMenu.length; i++) {
			this.subMenuItemsList += "<a class='subnav_sub_link' href='" + this.activeMenu[i+1] + "'>" + this.activeMenu[i] + "</a>";
			i = i + 1;
		}
		this.subMenuItemsList = "<div id='subnav_sub_list'>" + this.subMenuItemsList + "</div>";	
	}
}

//Function fuer das Einblenden der Unterpunkte Subnavigation
//aus der Seite werden der Name des Menuesets und Hilite-Kennung (1 = Menuegrafik ist Hilite, 0 = Menuegrafik ist kein hilite) uebergeben

var subnav_0 = '';

function showSubMenu(whichMenu,whichPic) {
	
	if( whichMenu == '' ) return;
	
	//neues Highlight anzeigen
	resetHighlight();
	if(whichPic == 0) showHighlight(whichMenu.imgname);		
	
	//workaround mozilla menuwidth bug
	if(navigator.appVersion.indexOf("MSIE") != -1){
		document.getElementById("subnav_submenu").style.width = 20 + "px";
		}
	else{
		document.getElementById("subnav_submenu").style.width = "auto";
	}
	document.getElementById("subnav_submenu").style.visibility = "hidden";
	document.getElementById("subnav_submenu").style.display = "none";
	//writing html-strings
	if(whichMenu.activeMenu != 0) {
		document.getElementById("subnav_submenu").innerHTML = whichMenu.subMenuItemsList;
		document.getElementById("subnav_submenu").style.display = "block";
	}
		
	//abfrage der img-position fuer die positionierung des menues
	if(whichMenu.imgPosChecked == 0 && whichMenu.activeMenu != 0) {
		whichMenu.menuPos = eval("document." + whichMenu.imgname + ".offsetLeft");
		whichMenu.menuTop = document.getElementById("subnav").offsetTop;
		whichMenu.imgHeight = eval("document." + whichMenu.imgname + ".offsetHeight");
		whichMenu.menuTop = whichMenu.menuTop + whichMenu.imgHeight;
		whichMenu.imgWidth = eval("document." + whichMenu.imgname + ".offsetWidth");
		whichMenu.menuWidth = document.getElementById("subnav_sub_list").offsetWidth;
		if(whichMenu.menuWidth < whichMenu.imgWidth) whichMenu.menuWidth = whichMenu.imgWidth;
		var currWidth = whichMenu.menuPos + whichMenu.menuWidth;
		if(currWidth >= 780){
	 		whichMenu.menuPos = (780 - whichMenu.menuWidth);			
		}
		
		whichMenu.imgPosChecked = 1;
	}
	
	//positioning menu-layers
	if(whichMenu.activeMenu != 0) {
		document.getElementById("subnav_submenu").style.left= whichMenu.menuPos + "px";
		document.getElementById("subnav_submenu").style.top = whichMenu.menuTop + "px";
		document.getElementById("subnav_submenu").style.width = whichMenu.menuWidth + "px";
		document.getElementById("subnav_submenu").style.visibility = "visible";
		document.getElementById("subnav_submenu").style.display = "block";				
	}
	//if there is no submenu
	else if(whichMenu.activeMenu == 0) {
		document.getElementById("subnav_submenu").style.visibility = "hidden";
		document.getElementById("subnav_submenu").style.display = "none";
		}
	//reset timeout
	window.clearTimeout(zu);	
}

function submenuCollaps(){
		//zurucksetzen des highlights;
		resetHighlight();
		//verstecken des popup-menues
		window.clearTimeout(zu);
		document.getElementById("subnav_submenu").style.visibility="hidden";
		document.getElementById("subnav_submenu").style.display="none";		
}
	
//===============================
//Bildertausch ohne Submenu
//==============================
function subButton(whichImg,picsrc){
	this.imgname = new Object(whichImg);
	this.imgname.createHiliteImages = createHiliteObj;
	this.imgname.createHiliteImages(picsrc);	
}

function showHigh(whichButton,whichPic){
	if(whichPic == 0) document.images[whichButton.imgname].src = whichButton.imgname.onimg.src;	
	//submenuCollaps();	
}

function resetHigh(whichButton,whichPic){
	if(whichPic == 0) document.images[whichButton.imgname].src = whichButton.imgname.offimg.src;
}