/**
 * @author Alexander Farkas
 * v. 1.21
 */


(function($) {
	if(!document.defaultView || !document.defaultView.getComputedStyle){ // IE6-IE8
		var oldCurCSS = jQuery.curCSS;
		jQuery.curCSS = function(elem, name, force){
			if(name === 'background-position'){
				name = 'backgroundPosition';
			}
			if(name !== 'backgroundPosition' || !elem.currentStyle || elem.currentStyle[ name ]){
				return oldCurCSS.apply(this, arguments);
			}
			var style = elem.style;
			if ( !force && style && style[ name ] ){
				return style[ name ];
			}
			return oldCurCSS(elem, 'backgroundPositionX', force) +' '+ oldCurCSS(elem, 'backgroundPositionY', force);
		};
	}

	var oldAnim = $.fn.animate;
	$.fn.animate = function(prop){
		if('background-position' in prop){
			prop.backgroundPosition = prop['background-position'];
			delete prop['background-position'];
		}
		if('backgroundPosition' in prop){
			prop.backgroundPosition = '('+ prop.backgroundPosition;
		}
		return oldAnim.apply(this, arguments);
	};

	function toArray(strg){
		strg = strg.replace(/left|top/g,'0px');
		strg = strg.replace(/right|bottom/g,'100%');
		strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
		var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
		return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
	}

	$.fx.step. backgroundPosition = function(fx) {
		if (!fx.bgPosReady) {
			var start = $.curCSS(fx.elem,'backgroundPosition');

			if(!start){//FF2 no inline-style fallback
				start = '0px 0px';
			}

			start = toArray(start);

			fx.start = [start[0],start[2]];

			var end = toArray(fx.options.curAnim.backgroundPosition);
			fx.end = [end[0],end[2]];

			fx.unit = [end[1],end[3]];
			fx.bgPosReady = true;
		}
		//return;
		var nowPosX = [];
		nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
		nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];
		fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];

	};
})(jQuery);

(function($) {
  var cache = [];
  // Arguments are image paths relative to the current page.
  $.preLoadImages = function() {
    var args_len = arguments.length;
    for (var i = args_len; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = arguments[i];
      cache.push(cacheImage);
    }
  }
})(jQuery)

if ($("body#home").length > 0) {

  $.preLoadImages("/images/1.jpg", "/images/1.jpg");
  $.preLoadImages("/images/2.jpg", "/images/2.jpg");
  $.preLoadImages("/images/3.jpg", "/images/3.jpg");
  $.preLoadImages("/images/4.jpg", "/images/4.jpg");
  
  $(function() {
  
    /* position of the <li> that is currently shown */
    var current = 0;
    
  var loaded  = 0;
  for(var i = 1; i < 5; ++i)
  	$('<img />').load(function(){
  		++loaded;
  		if(loaded == 4){
  		  $('.menuWrapper > ul.menu > li:first > ul').slideDown();
  			$('#bg1,#bg2,#bg3,#bg4').mouseover(function(e){
  				
  				var $this = $(this);
  				/* if we hover the current one, then don't do anything */
  				if($this.parent().index() == current) {
  					return;
  				}
  
  				/* item is bg1 or bg2 or bg3 or bg4, depending where we are hovering */
  				var item = e.target.id;
  
  				if(item == 'bg1' || current == 2) {
  					$('#menu .sub'+parseInt(current+1)).stop().removeAttr('style').slideUp();
  				}
  				else {
            $('#menu .sub'+parseInt(current+1)).stop().removeAttr('style').slideUp();
  				}
  
  				if(item == 'bg1' || current == 2){
  					/* if we hover the first <li> or if we come from the last one, then the images should move left -> right */
  					$('#menu > li').stop().animate({backgroundPosition:"(-800px 0)"},0).removeClass('bg1 bg2 bg3 bg4').addClass(item);
  					move(1,item);
  				}
  				else{
  					/* if we hover the first <li> or if we come from the last one, then the images should move right -> left */
  					$('#menu > li').stop().animate({backgroundPosition:"(800px 0)"},0).removeClass('bg1 bg2 bg3 bg4').addClass(item);
  					move(0,item);
  				}
  				
  				/* change the current element */
  				current = $this.parent().index();
  
          $('#menu .sub'+parseInt(current+1)).stop().removeAttr('style').slideDown();
  			});
  		}	
  	}).attr('src', 'images/'+i+'.jpg');
    
    /*
    dir:1 - move left->right
    dir:0 - move right->left
     */
    function move(dir,item){
        if(dir){
          $('#bg1').parent().stop().animate({backgroundPosition:"(0 0)"},200);
          $('#bg2').parent().stop().animate({backgroundPosition:"(-238px 0)"},300);
          $('#bg3').parent().stop().animate({backgroundPosition:"(-476px 0)"},500);
          $('#bg4').parent().stop().animate({backgroundPosition:"(-714px 0)"},500,function(){
            $('#menuWrapper').removeClass('bg1 bg2 bg3 bg4').addClass(item);
          });
        }
        else{
          $('#bg1').parent().stop().animate({backgroundPosition:"(0 0)"},500,function(){
              $('#menuWrapper').removeClass('bg1 bg2 bg3 bg4').addClass(item);
          });
          $('#bg2').parent().stop().animate({backgroundPosition:"(-238px 0)"},400);
          $('#bg3').parent().stop().animate({backgroundPosition:"(-476px 0)"},300);
          $('#bg4').parent().stop().animate({backgroundPosition:"(-714px 0)"},200);
        }
    }
    
  });

}