//on page load call VOX_init
$(document).ready(VOX_init);

//add thickbox to href elements that have a class of .thickbox
function VOX_init(){
	$("a.thickbox").click(function(){
	var t = this.title || this.name || null;
	var g = this.rel || false;
	VOX_show(t,this.href,g);
	this.blur();
	return false;
	});
}

function VOX_show(caption, url, imageGroup) {//function called when the user clicks on a thickbox link

	var lang1="Zavřít"; // pro tag title
	var lang2=" ";	// pro <a></a>

	try {
		if (document.getElementById("VOX_HideSelect") == null) {
		$("body").append("<iframe id='VOX_HideSelect'></iframe><div id='VOX_overlay'></div><div id='VOX_window'></div>");
		$("#VOX_overlay").click(VOX_remove);
		}
		
		if(caption==null){caption=""};
		
		$(window).scroll(VOX_position);
 		
		VOX_overlaySize();
		
		$("body").append("<div id='VOX_load'></div>");
		VOX_load_position();
		
		
		
	   if(url.indexOf("?")!==-1){ //If there is a query string involved
			var baseURL = url.substr(0, url.indexOf("?"));
	   }else{ 
	   		var baseURL = url;
	   }
	   var urlString = /\.jpg|\.jpeg|\.png|\.gif|\.bmp/g;
	   var urlType = baseURL.toLowerCase().match(urlString);
		
		if(urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp'){//code to show images
				
			VOX_PrevCaption = "";
			VOX_PrevURL = "";
			VOX_PrevHTML = "";
			VOX_NextCaption = "";
			VOX_NextURL = "";
			VOX_NextHTML = "";
			VOX_imageCount = "";
			VOX_FoundURL = false;
			if(imageGroup){
				VOX_TempArray = $("a[@rel="+imageGroup+"]").get();
				for (VOX_Counter = 0; ((VOX_Counter < VOX_TempArray.length) && (VOX_NextHTML == "")); VOX_Counter++) {
					var urlTypeTemp = VOX_TempArray[VOX_Counter].href.toLowerCase().match(urlString);
						if (!(VOX_TempArray[VOX_Counter].href == url)) {						
							if (VOX_FoundURL) {
								VOX_NextCaption = VOX_TempArray[VOX_Counter].title;
								VOX_NextURL = VOX_TempArray[VOX_Counter].href;
								VOX_NextHTML = "<span id='VOX_next'>&nbsp;&nbsp;<a href='#'>Další &gt;</a></span>";
							} else {
								VOX_PrevCaption = VOX_TempArray[VOX_Counter].title;
								VOX_PrevURL = VOX_TempArray[VOX_Counter].href;
								VOX_PrevHTML = "<span id='VOX_prev'>&nbsp;&nbsp;<a href='#'>&lt; Přechozí</a></span>";
							}
						} else {
							VOX_FoundURL = true;
							VOX_imageCount = "Obrázek " + (VOX_Counter + 1) +" z "+ (VOX_TempArray.length);											
						}
				}
			}

			imgPreloader = new Image();
			imgPreloader.onload = function(){		
			imgPreloader.onload = null;
				
			// Resizing large images - orginal by Christian Montoya edited by me.
			
			var pagesize = VOX_getPageSize();
			var x = pagesize[0] - 150;
			var y = pagesize[1] - 150;
			var imageWidth = imgPreloader.width;
			var imageHeight = imgPreloader.height;
			/*
			if (imageWidth > x) {
				imageHeight = imageHeight * (x / imageWidth); 
				imageWidth = x; 
				if (imageHeight > y) { 
					imageWidth = imageWidth * (y / imageHeight); 
					imageHeight = y; 
				}
			} else if (imageHeight > y) { 
				imageWidth = imageWidth * (y / imageHeight); 
				imageHeight = y; 
				if (imageWidth > x) { 
					imageHeight = imageHeight * (x / imageWidth); 
					imageWidth = x;
				}
			}
			*/
			// End Resizing
			
			VOX_WIDTH = imageWidth + 22;
			VOX_HEIGHT = imageHeight + 60;
			
			var tagImg= "<a href='' id='VOX_ImageOff' title='"+lang1+"'>"
				   + "<img id='VOX_Image' src='"+url+"' alt='"+caption+"'/></a>";
			var tagCaption= "<div id='VOX_caption'>"+caption+"<div id='VOX_secondLine'>" 
				   + VOX_imageCount + VOX_PrevHTML + VOX_NextHTML 
				   + "</div></div>"
				   + "<div id='VOX_closeWindow'><a href='#' id='VOX_closeWindowButton' title='"+lang1+"'>"+lang2+"</a>"
				   +"</div>";
			
			$("#VOX_window").append(tagCaption+tagImg); 		
			
			$("#VOX_closeWindowButton").click(VOX_remove);
			
			if (!(VOX_PrevHTML == "")) {
				function goPrev(){
					if($(document).unclick(goPrev)){$(document).unclick(goPrev)};
					$("#VOX_window").remove();
					$("body").append("<div id='VOX_window'></div>");
					VOX_show(VOX_PrevCaption, VOX_PrevURL, imageGroup);
					return false;	
				}
				$("#VOX_prev").click(goPrev);
			}
			
			if (!(VOX_NextHTML == "")) {		
				function goNext(){
					$("#VOX_window").remove();
					$("body").append("<div id='VOX_window'></div>");
					VOX_show(VOX_NextCaption, VOX_NextURL, imageGroup);				
					return false;	
				}
				$("#VOX_next").click(goNext);
				
			}
			
			document.onkeydown = function(e){ 	
				if (e == null) { // ie
					keycode = event.keyCode;
				} else { // mozilla
					keycode = e.which;
				}
				if(keycode == 27){ // close
					VOX_remove();
				} else if(keycode == 190){ // display previous image
					if(!(VOX_NextHTML == "")){
					document.onkeydown = "";
					goNext();
					}
				} else if(keycode == 188){ // display next image
					if(!(VOX_PrevHTML == "")){
					document.onkeydown = "";
					goPrev();
					}
				}	
			}
				
			VOX_position();
			$("#VOX_load").remove();
			$("#VOX_ImageOff").click(VOX_remove);
			$("#VOX_window").css({display:"block"}); //for safari using css instead of show
			}
	  
			imgPreloader.src = url;
		}else{//code to show html pages
			
			var queryString = url.replace(/^[^\?]+\??/,'');
			var params = VOX_parseQuery( queryString );
			
			VOX_WIDTH = (params['width']*1) + 30;
			VOX_HEIGHT = (params['height']*1) + 40;
			ajaxContentW = VOX_WIDTH - 30;
			ajaxContentH = VOX_HEIGHT - 45;
			
			if(url.indexOf('VOX_iframe') != -1){				
					urlNoQuery = url.split('VOX_');		
					$("#VOX_window").append("<div id='VOX_title'><div id='VOX_ajaxWindowTitle'>"+caption+"</div><div id='VOX_closeAjaxWindow'><a href='#' id='VOX_closeWindowButton' title='"+lang1+"'>"+lang2+"</a></div></div><iframe frameborder='0' hspace='0' src='"+urlNoQuery[0]+"' id='VOX_iframeContent' name='VOX_iframeContent' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;' onload='VOX_showIframe()'> </iframe>");
				}else{
					$("#VOX_window").append("<div id='VOX_title'><div id='VOX_ajaxWindowTitle'>"+caption+"</div><div id='VOX_closeAjaxWindow'><a href='#' id='VOX_closeWindowButton'>"+lang2+"</a></div></div><div id='VOX_ajaxContent' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px;'></div>");
			}
					
			$("#VOX_closeWindowButton").click(VOX_remove);
			
				if(url.indexOf('VOX_inline') != -1){	
					$("#VOX_ajaxContent").html($('#' + params['inlineId']).html());
					VOX_position();
					$("#VOX_load").remove();
					$("#VOX_window").css({display:"block"}); 
				}else if(url.indexOf('VOX_iframe') != -1){
					VOX_position();
					if(frames['VOX_iframeContent'] == undefined){//be nice to safari
						$("#VOX_load").remove();
						$("#VOX_window").css({display:"block"});
						$(document).keyup( function(e){ var key = e.keyCode; if(key == 27){VOX_remove()} });
					}
				}else{
					$("#VOX_ajaxContent").load(url, function(){
						VOX_position();
						$("#VOX_load").remove();
						$("#VOX_window").css({display:"block"}); 
					});
				}
			
		}
		
		$(window).resize(VOX_position);
		
		document.onkeyup = function(e){ 	
			if (e == null) { // ie
				keycode = event.keyCode;
			} else { // mozilla
				keycode = e.which;
			}
			if(keycode == 27){ // close
				VOX_remove();
			}	
		}
		
	} catch(e) {
		alert( e );
	}
}

//helper functions below

function VOX_showIframe(){
	$("#VOX_load").remove();
	$("#VOX_window").css({display:"block"});
}

function VOX_remove() {
 	$("#VOX_imageOff").unclick();
	$("#VOX_overlay").unclick();
	$("#VOX_closeWindowButton").unclick();
	$("#VOX_window").fadeOut("fast",function(){$('#VOX_window,#VOX_overlay,#VOX_HideSelect').remove();});
	$("#VOX_load").remove();
	return false;
}

function VOX_position() {
	var pagesize = VOX_getPageSize();	
	var arrayPageScroll = VOX_getPageScrollTop();	
	$("#VOX_window").css({width:VOX_WIDTH+"px",left: (arrayPageScroll[0] + (pagesize[0] - VOX_WIDTH)/2)+"px", top: (arrayPageScroll[1] + (pagesize[1]-VOX_HEIGHT)/2)+"px" });
}

function VOX_overlaySize(){
	if (window.innerHeight && window.scrollMaxY || window.innerWidth && window.scrollMaxX) {	
		yScroll = window.innerHeight + window.scrollMaxY;
		xScroll = window.innerWidth + window.scrollMaxX;
		var deff = document.documentElement;
		var wff = (deff&&deff.clientWidth) || document.body.clientWidth || window.innerWidth || self.innerWidth;
		var hff = (deff&&deff.clientHeight) || document.body.clientHeight || window.innerHeight || self.innerHeight;
		xScroll -= (window.innerWidth - wff);
		yScroll -= (window.innerHeight - hff);
	} else if (document.body.scrollHeight > document.body.offsetHeight || document.body.scrollWidth > document.body.offsetWidth){ // all but Explorer Mac
		yScroll = document.body.scrollHeight;
		xScroll = document.body.scrollWidth;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		yScroll = document.body.offsetHeight+70;
		xScroll = document.body.offsetWidth;
  	}
	
	$("#VOX_overlay").css({"height":yScroll +"px","width":xScroll +"px"});	
	$("#VOX_HideSelect").css({"height":yScroll +"px","width":xScroll +"px"});
}

function VOX_load_position() {
	var pagesize = VOX_getPageSize();
	var arrayPageScroll = VOX_getPageScrollTop();
	
	$("#VOX_load")
	.css({left: (arrayPageScroll[0] + (pagesize[0] - 100)/2)+"px", top: (arrayPageScroll[1] + ((pagesize[1]-100)/2))+"px" })
	.css({display:"block"});
}

function VOX_parseQuery ( query ) {
   var Params = new Object ();
   if ( ! query ) return Params; // return empty object
   var Pairs = query.split(/[;&]/);
   for ( var i = 0; i < Pairs.length; i++ ) {
      var KeyVal = Pairs[i].split('=');
      if ( ! KeyVal || KeyVal.length != 2 ) continue;
      var key = unescape( KeyVal[0] );
      var val = unescape( KeyVal[1] );
      val = val.replace(/\+/g, ' ');
      Params[key] = val;
   }
   return Params;
}

function VOX_getPageScrollTop(){
	var yScrolltop;
	var xScrollleft;
	if (self.pageYOffset || self.pageXOffset) {
		yScrolltop = self.pageYOffset;
		xScrollleft = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop || document.documentElement.scrollLeft ){	 // Explorer 6 Strict
		yScrolltop = document.documentElement.scrollTop;
		xScrollleft = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScrolltop = document.body.scrollTop;
		xScrollleft = document.body.scrollLeft;
	}
	arrayPageScroll = new Array(xScrollleft,yScrolltop) 
	return arrayPageScroll;
}

function VOX_getPageSize(){
	var de = document.documentElement;
	var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
	var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight
	arrayPageSize = new Array(w,h) 
	return arrayPageSize;
}