/*
JavaScript Gallery
Copyright (C) 2008 Aptus s.c.
All rights reserved
*/

var mousex;
var mousey;

var jsgId='JSgallery';
var jsgImgPath='i/';
var jsgDefaultId='jsg';

var jsgOldOnResize, jsgOldOnScroll;
var jsgActive=null;
var jsgGalleries=[];
var jsgCallback=false;
var jsgSrc;

function jsgMove()
{
	var e=document.getElementById(jsgId+'_window');
	if(e) {
		var es=e.style;
		var mx=document.body.scrollLeft;
		var my=document.body.scrollTop;
		var cx=document.body.clientWidth;
		var cy=document.body.clientHeight;

		var x=Math.floor(cx/2-e.offsetWidth/2)+mx;
		var y=Math.floor(cy/2-e.offsetHeight/2)+my;
//		alert('my: '+my+' cy: '+cy+' offsetHeight: '+e.offsetHeight+' y: '+y);
		if(y<0)
			y=0;
		if(x<0)
			x=cx-e.offsetWidth;
		es.marginLeft=x+'px';
		es.marginTop=y+'px';
	}
}

function jsgOnScroll(e)
{
	jsgMove();
	if(jsgOldOnScroll)
		jsgOldOnScroll(e);
}

function jsgResize()
{
	var e=document.getElementById(jsgId);
	if(e) {
		var es=e.style;
		if(es.display!='none') {
			es.display='none';
			es.width=document.body.scrollWidth+'px';
			es.height=(document.body.scrollHeight>document.body.clientHeight ? document.body.scrollHeight : document.body.clientHeight)+'px';
			es.display='';
		}
		jsgMove();
	}
}

function jsgOnResize(e)
{
	jsgResize();
	if(jsgOldOnResize)
		jsgOldOnResize(e);
}

function jsgReadyState()
{
	if(event.srcElement.readyState=='complete')
		jsgMove();
}

function jsgLoad(e)
{
	jsgMove();
}

function jsgImgClick(e)
{
	var x=e ? (e.offsetX ? e.offsetX : e.pageX-this.x) : event.offsetX;
	if(x<this.offsetWidth/2)
		jsgActive.prev();
	else
		jsgActive.next();
}

function jsgInit()
{

	var e=document.getElementById(jsgId);
	if(!e) {
		jsgOldOnResize=window.onresize;
		window.onresize=jsgOnResize;
		jsgOldOnScroll=window.onscroll;
		window.onscroll=jsgOnScroll;
		var e=document.createElement('div');
		e.id=jsgId;
		e.style.position='absolute';
		e.style.left='0px';
		e.style.top='0px';
		e.style.backgroundImage='url('+jsgImgPath+'jsg_bg.gif)';
		e.innerHTML='<table id="'+jsgId+'_window" cellspacing=0 cellpadding=0 class="jsg"><tr><td class="header"><a href="javascript:jsgClose();void(0);"><img src="'+jsgImgPath+'jsg_close.gif"></a><span id="'+jsgId+'_title"></span></td></tr><tr><td class="image"><img src="/i/b.gif" id="'+jsgId+'_image"></td></tr><tr><td class="footer"><div class="navi"><a href="javascript:jsgActive.first();void(0);"><img src="'+jsgImgPath+'jsg_first.gif"></a><a href="javascript:jsgActive.prev();void(0);"><img src="'+jsgImgPath+'jsg_prev.gif"></a><a href="javascript:jsgActive.next();void(0);"><img src="'+jsgImgPath+'jsg_next.gif"></a><a href="javascript:jsgActive.last();void(0);"><img src="'+jsgImgPath+'jsg_last.gif"></a></div><span id="'+jsgId+'_desc"></span></td></tr></table>';
		document.body.appendChild(e);
		e=document.getElementById(jsgId);
		var img=document.getElementById(jsgId+'_image');
		if(img.addEventListener)
			img.addEventListener('load',jsgLoad,false);
		else
			img.attachEvent('onreadystatechange',jsgReadyState);
		img.onclick=jsgImgClick;
		jsgResize();
	}
	e.style.display='';
}

function jsgClose()
{
	var e=document.getElementById(jsgId);
	if(e) {
		e.style.display='none';
		document.getElementById(jsgId+'_image').src='';
	}
	jsgActive=null;
}

function jsgShow(i)
{
	this.current=i;
	var img=this.images[i];
	document.getElementById(jsgId+'_image').src=typeof(img)=='object' ? img[0] : img;
	document.getElementById(jsgId+'_desc').innerHTML=(i+1)+'/'+this.images.length+' '+(typeof(img)=='object' ? img[1] : '');
}

function jsgOpen(i)
{
	jsgInit();
	jsgActive=this;
	document.getElementById(jsgId+'_title').innerHTML=this.title;
	this.show(i);
}

function jsgFirst()
{
	this.show(0);
}

function jsgPrev()
{
	if(this.current>0)
		this.show(this.current-1);
}

function jsgNext()
{
	if(this.current<this.images.length-1)
		this.show(this.current+1);
}

function jsgLast()
{
	this.show(this.images.length-1);
}

function jsgFind(i)
{
	var c;
	for(c=0; c<this.images.length; c++)
		if(i==(typeof(this.images[c])=='object' ? this.images[c][0] : this.images[c]))
			return c;
	return null;
}

function JSgallery(g,t)
{
	this.images=g;
	this.title=t;
	this.open=jsgOpen;
	this.show=jsgShow;
	this.first=jsgFirst;
	this.prev=jsgPrev;
	this.next=jsgNext;
	this.last=jsgLast;
	this.find=jsgFind;
}

function jsgFindImages(e)
{
	var img=new Array();
	var i,j;
	for(i=0; i<e.childNodes.length; i++)
		if(e.childNodes[i].tagName) {
			if(e.childNodes[i].tagName=='IMG' && e.childNodes[i].onclick) {
				e.childNodes[i].onclick();
				img.push([jsgSrc,e.childNodes[i].title]);
			}
			var img2=jsgFindImages(e.childNodes[i]);
			for(j=0; j<img2.length; j++)
				img.push(img2[j]);
		}
	return img;
}

function jsgClick(i,e,d)
{
	var l=false;
	var jsgTmp;
	if(jsgCallback) {
		jsgSrc=i;
		return;
	}
	if(typeof(e)=='object')
		l=true;
	else
		d=e;
	if(typeof(d)=='undefined')
		d=jsgDefaultId;
	if(l || typeof(jsgGalleries[d])=='undefined') {
		var bl;
		if(l)
			while(e) {
				e=e.parentNode;
				if(e.id==d) {
					bl=e;
					break;
				}
			}
		else
			bl=document.getElementById(d);
		if(!bl)
			return;
		jsgCallback=true;
		var img=jsgFindImages(bl);
		jsgCallback=false;
		jsgTmp=new JSgallery(img,bl.title);
		if(!l)
			jsgGalleries[d]=jsgTmp;
	}
	else
		jsgTmp=jsgGalleries[d];
	jsgTmp.open(jsgTmp.find(i));
}


function img1(name) {
	 img=new Image();
     img.src = '/i/'+name+'.gif';
	 document.images[name].src=img.src;
}

function img2(name) {
	 img=new Image();
     img.src = '/i/'+name+'b.gif';
	 document.images[name].src=img.src;
}

function dbl(t) {
	if(t.dlg_clicked)
		return false;
	t.dlg_clicked=true;
	return true;
}

function getElementsByClassName(space,cn){
  var arr = new Array(); 
  var els = space.getElementsByTagName("*");
  var exp= new RegExp("^(.* )?"+cn+"( .*)?$", "g");
  for (var i = 0; i < els.length; i++ ){
    if (exp.test(els[i].className)){
      arr.push(els[i]);
    }
  }
  return arr;
}

function toogleButton(obj) {
	var element = obj.parentNode;
	if(!(element.open==false || element.open==true))
		element.open = false;
	var bottom = getElementsByClassName(element,'bottom')[0];
	var categories = getElementsByClassName(element,'categories')[0];
	var image = getElementsByClassName(element,'image')[0];
	var inner = getElementsByClassName(element,'inner')[0];
	if(element.open==true) {
		$(image).attr("src","/i/button_down.gif");
		$(categories).animate({height: "0px"},"normal");
		$(bottom).fadeIn("slow");
		element.open = false;
	}
	else {
		$(image).attr("src","/i/button_up.gif");
		$(categories).animate({height: inner.offsetHeight},"normal");
		$(bottom).fadeOut("slow");
		element.open = true;
	}
}

function newToogleButton(obj) {
	var element = obj.parentNode;
	if($(element).hasClass("open")) {
		$(element).removeClass("open");
		$(element).find(".subcategories").addClass("down");
		$(element).find(".subcategories").removeClass("up");
		element = element.parentNode;
		$(element).find(".categories").animate({height: $(element).find(".inner").height()},"normal");
		$(element).find(".bottom").fadeOut("normal");
	}
	else {
		$(element).addClass("open");
		$(element).find(".subcategories").addClass("up");
		$(element).find(".subcategories").removeClass("down");
		element = element.parentNode;
		$(element).find(".categories").animate({height: 0},"normal");
		$(element).find(".bottom").fadeIn("normal");
	}
}

function dlg_get(u,cb,cbp)
{
	return dlg_xmlhttprequest(u,'GET','','',cb,cbp);
}


function dlg_xmlhttprequest(u,m,d,c,cb,cbp)
{
	u=dlg_url(u);
	var r=false;
    if(window.XMLHttpRequest) {
    	try {
			r=new XMLHttpRequest();
        }
		catch(e) {
			r=false;
        }
    }
	else if(window.ActiveXObject) {
       	try {
        	r=new ActiveXObject("Msxml2.XMLHTTP");
      	}
		catch(e) {
        	try {
          		r=new ActiveXObject("Microsoft.XMLHTTP");
        	}
			catch(e) {
          		r=false;
        	}
		}
    }

	if(r) {
		r.onreadystatechange=function() {
			if(r.readyState==4) {
				if(r.status==200)
					cb(r.responseText,cbp);
			}
		};
		r.open(m,u);
		if(c!='')
			r.setRequestHeader('Content-Type',c);
		r.send(d);
		return true;
	}
	return false;
}

function dlg_url(u)
{
	if(typeof(u)=='object') {
		var s=u[0];
		if(typeof(u[1])=='object') {
			var k;
			var sp='?';
			for (k in u[1]) {
				s+=sp+encodeURIComponent(k)+'='+encodeURIComponent(u[1][k]);
				sp='&';
			}
		}
		if(typeof(u[2])!='undefined')
			s+='#'+u[2];
		return s;
	}
	return u;
}

function changefontSize(size) {
	document.body.style.fontSize = size+"px";
	dlg_get('index.php?font_size='+size);
}