/*--- Lightbox JavaScript ----------------------------------------------------*/
/*-------------------------------GLOBAL VARIABLES-----------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

/*----------------------------------------------------------------------------*/

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser 	= "Safari"
	else if (checkIt('omniweb')) browser 	= "OmniWeb"
	else if (checkIt('opera')) browser 		= "Opera"
	else if (checkIt('webtv')) browser 		= "WebTV";
	else if (checkIt('icab')) browser 		= "iCab"
	else if (checkIt('msie')) browser 		= "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";

	if (!version) version = detect.charAt(place + thestring.length);

	if (!OS) {
		if (checkIt('linux')) OS 		= "Linux";
		else if (checkIt('x11')) OS 	= "Unix";
		else if (checkIt('mac')) OS 	= "Mac"
		else if (checkIt('win')) OS 	= "Windows"
		else OS 						= "an unknown operating system";
	}
}

function checkIt(string) {
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

/*-----------------------------------------------------------------------------------------------*/

Event.observe(window, 'load', initialize, false);
Event.observe(window, 'load', getBrowserInfo, false);
Event.observe(window, 'unload', Event.unloadCache, false);

var lightbox = Class.create();

lightbox.prototype = {

	yPos : 0,
	xPos : 0,

	initialize: function(ctrl) {
		this.content = ctrl.rel;
		Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
		ctrl.onclick = function(){return false;};
	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(){
		/*if (browser == 'Internet Explorer'){
			this.getScroll();
			this.prepareIE('100%', 'hidden');
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}*/
		this.displayLightbox("block");
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
	prepareIE: function(height, overflow){
		bod = document.getElementsByTagName('body')[0];
		bod.style.height = height;
		//bod.style.overflow = overflow;
  
		htm = document.getElementsByTagName('html')[0];
		htm.style.height = height;
		//htm.style.overflow = overflow; 
	},
	
	// In IE, select elements hover on top of the lightbox
	hideSelects: function(visibility){
		selects = document.getElementsByTagName('select');
		for(i = 0; i < selects.length; i++) {
			selects[i].style.visibility = visibility;
		}
	},
	
	// Taken from lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
	getScroll: function(){
		if (self.pageYOffset) {
			this.yPos = self.pageYOffset;
		} else if (document.documentElement && document.documentElement.scrollTop){
			this.yPos = document.documentElement.scrollTop; 
		} else if (document.body) {
			this.yPos = document.body.scrollTop;
		}
	},
	
	setScroll: function(x, y){
		window.scrollTo(x, y); 
	},
	
	displayLightbox: function(display){
		var scrollOffsets = document.viewport.getScrollOffsets();
		var top = scrollOffsets[1] + Math.floor(document.viewport.getHeight() / 2) - 200;

		$('overlay').style.display = display;
		$(this.content).style.display = display;
		$(this.content).style.left = (document.body.offsetWidth/2-440)+'px';
		//$(this.content).style.top = top + 'px';
		if(display != 'none') this.actions();
		var pageEnd = (parseInt($(this.content).offsetHeight) + parseInt($(this.content).style.top));
		if (document.body.offsetHeight < 32000){
			if (pageEnd > document.body.offsetHeight){
				$('overlay').style.height = pageEnd + 'px';
			}else{
				$('overlay').style.height = document.body.offsetHeight + 'px';
			}
		}else{
			$('overlay').style.height = '32000px';
			overlay2 = document.createElement('div');
			overlay2.id = 'overlay2';
			document.getElementsByTagName('body')[0].appendChild(overlay2);
			document.getElementById('overlay2').style.position = 'absolute';
			document.getElementById('overlay2').style.top = '32000px';
			if (navigator.appName.indexOf('Internet Explorer') != -1){
				document.getElementById('overlay2').style.width = document.body.offsetWidth;
			}else{
				document.getElementById('overlay2').style.width = '100%';
			}
			document.getElementById('overlay2').style.height = (document.body.offsetHeight-32000) + 'px';
			document.getElementById('overlay2').style.background = '#F4FCFF';
			if (navigator.appName.indexOf('Internet Explorer') != -1){
				document.getElementById('overlay2').style.filter = 'alpha(opacity=80)';
			}else{
				document.getElementById('overlay2').style.opacity = '0.8';
			}
			document.getElementById('overlay2').style.display = 'block';
		}
	},
	
	// Search through new links within the lightbox, and attach click event
	actions: function(){
		lbActions = document.getElementsByClassName('lbAction');

		for(i = 0; i < lbActions.length; i++) {
			Event.observe(lbActions[i], 'click', this[lbActions[i].rel].bindAsEventListener(this), false);
			lbActions[i].onclick = function(){return false;};
		}

	},
	
	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(){
		/*if (browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.prepareIE("auto", "auto");
			this.hideSelects("visible");
		}*/
		this.displayLightbox("none");
		if (document.getElementById('overlay2')){
			document.getElementById('overlay2').style.display = 'none';
		}
	}
}

/*-----------------------------------------------------------------------------------------------*/

// Onload, make all links that need to trigger a lightbox active
function initialize(){
	rightXPos();
	hinweis();
	centerImage();
	centerTable();
	tdEmpty();
	lbShadeSize();
	lbAdviceXPos();
	lbFeedbackXPos();
	lbRateXPos();
	addLightboxMarkup();
	lbox = document.getElementsByClassName('lbOn');
	for (i=0; i<lbox.length; i++) {
		valid = new lightbox(lbox[i]);
	}
}

function rightXPos(){
	if (!document.getElementById('middle-big')){
		document.getElementById('right').style.position = 'absolute';
		document.getElementById('right').style.left = (document.body.offsetWidth/2+217)+'px';
	}
}
window.onresize = rightXPos;

function imageResize(){
	for (var x=0; x<document.getElementsByName('contentImage').length; x++){
		if (document.getElementsByName('contentImage')[x].width > 455){
			document.getElementsByName('contentImageView')[x].href = "javascript:view=window.open('"+document.getElementsByName('contentImage')[x].src+"','view','width=0,height=0,top=50,left=50,location,status');view.focus();view.resizeTo("+(document.getElementsByName('contentImage')[x].width+50)+","+(document.getElementsByName('contentImage')[x].height+110)+")";
			document.getElementsByName('contentImage')[x].width = 455;
		}else{
			document.getElementsByName('contentImageView')[x].innerHTML = "";
			document.getElementsByName('contentImageView')[x].className = "";
		}
	}
}

function hinweis(){
	for (var x=0; x<document.getElementsByTagName("div").length; x++){
		if (document.getElementsByTagName("div")[x].className == "hinweisInnerBottom"){
			document.getElementsByTagName("div")[x].innerHTML = document.getElementsByTagName("div")[x].innerHTML.substr(document.getElementsByTagName("div")[x].innerHTML.indexOf((navigator.appName.indexOf("Internet Explorer")!=-1)?"</H1>":"</h1>"));
		}
	}
}

function centerImage(){
	for (var x=0; x<document.getElementsByName('contentImage').length; x++){
		document.getElementsByName('contentImage')[x].style.marginLeft = ((740-document.getElementsByName('contentImage')[x].width)/2) + 'px';
	}
}

function centerTable(){
	var width = 0;
	var contentWidth = 0;
	for (var x=0; x<document.getElementsByTagName('colgroup').length; x++){
		width = 0;
		for (var y=0; y<document.getElementsByTagName('colgroup')[x].getElementsByTagName('col').length; y++){
			width = (width+parseInt(document.getElementsByTagName('colgroup')[x].getElementsByTagName('col')[y].width));
		}
		contentWidth = 730;
		if (width < 690){
			if (document.all){
				if (document.getElementsByTagName('table')[x].parentElement.className == 'lightboxstandard'){
					contentWidth = (document.cookie.indexOf('ShowBsp') == -1) ? 810 : 628;
				}
			}else{
				if (document.getElementsByTagName('table')[x].parentNode.className == 'lightboxstandard'){
					contentWidth = (document.cookie.indexOf('ShowBsp') == -1) ? 810 : 628;
				}
			}
			document.getElementsByTagName('table')[x].style.marginLeft = ((contentWidth-width)/2) + 'px';
		}
	}
}

function tdEmpty(){
	for (var x=0; x<document.getElementsByTagName("td").length; x++){
		if (document.getElementsByTagName("td")[x].innerHTML == ""){
			document.getElementsByTagName("td")[x].innerHTML = "&nbsp;";
		}
	}
}

function lbShadeSize(){	
	if (document.getElementById('shade')){
		document.getElementById('shade').style.width = document.body.offsetWidth;
		document.getElementById('shade').style.height = document.body.offsetHeight;
	}
}

function lbAdviceXPos(){
	if (document.getElementById("lightbox_advice")){
		document.getElementById("lightbox_advice").style.left = (document.body.offsetWidth/2-280)+"px";
		document.getElementById("lightbox_advice").style.top = "100px";
	}
}

function lbFeedbackXPos(){
	if (document.getElementById("lightbox_feedback")){
		document.getElementById("lightbox_feedback").style.left = (document.body.offsetWidth/2-440)+"px";
		document.getElementById("lightbox_feedback").style.top = "100px";
	}
	if (document.getElementById("lightbox_feedback_success")){
		document.getElementById("lightbox_feedback_success").style.left = (document.body.offsetWidth/2-440)+"px";
		document.getElementById("lightbox_feedback_success").style.top = "100px";
	}
}

function lbRateXPos(){
	if (document.getElementById("lightbox_rate_success")){
		document.getElementById("lightbox_rate_success").style.left = (document.body.offsetWidth/2-280)+"px";
		document.getElementById("lightbox_rate_success").style.top = "100px";
	}
}

function addLightboxMarkup() {
	bod = document.getElementsByTagName('body')[0];
	overlay = document.createElement('div');
	overlay.id = 'overlay';
	bod.appendChild(overlay);
}

function lightboxprint(lb){
	pr = window.open('','','width=100,height=100');
	pr.document.body.innerHTML = (lb.indexOf('.') == -1) ? document.getElementById(lb).innerHTML : document.getElementById(lb).innerHTML.substring((document.getElementById(lb).innerHTML.indexOf('-->')+3), document.getElementById(lb).innerHTML.indexOf('hrBottom'));
	pr.document.body.innerHTML = pr.document.body.innerHTML.replace(/Fenster schließen/, '');
	pr.document.body.innerHTML = pr.document.body.innerHTML.replace(/pfeil_close/, '1px_transparent');
	pr.document.body.innerHTML = pr.document.body.innerHTML.replace(/"fileadmin/g, '"http://'+location.host+'/fileadmin');
	pr.print();
	pr.close();
}

function check(index){
	var y = 0;
	for (var x=0; x<document.forms[0].elements.length; x++){
		if ((index.indexOf('_') == -1) ? (index == document.forms[0].elements[x].name || index == document.forms[0].elements[x].name.substr(0, document.forms[0].elements[x].name.indexOf('_'))) : (document.forms[0].elements[x].name.indexOf(index) == 0)){
			if (document.forms[0].elements[x].name == index){
				y = x;
			}
			document.forms[0].elements[x].checked = (document.forms[0].elements[y].checked) ? true : false;
		}
	}
}