(function($) {
	$.extend($.fx.step,{
	    backgroundPosition: function(fx) {
            if (fx.state === 0 && typeof fx.end == 'string') {
                var start = $.curCSS(fx.elem,'backgroundPosition');
                start = toArray(start);
                fx.start = [start[0],start[2]];
                var end = toArray(fx.end);
                fx.end = [end[0],end[2]];
                fx.unit = [end[1],end[3]];
			}
            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];

           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]];
           }
        }
	});
})(jQuery);

			var current_slide;
			var slideshow_interval;
			
			function activateText (obj)
			{
				current_slide = $(obj).index();
				deactivateAllText();
				
				$(obj).addClass ("active");	
				
				if(current_slide==0){
					$('#slider-pointer').css({"left":"11px"});
				}
				if(current_slide==1){
					$('#slider-pointer').css({"left":"78px"});
				}
				if(current_slide==2){
					$('#slider-pointer').css({"left":"145px"});
				}
				if(current_slide==3){
					$('#slider-pointer').css({"left":"212px"});
				}
				if(current_slide==4){
					$('#slider-pointer').css({"left":"279px"});
				}

				clearPictograms();
				
				$('#pictogram-' + current_slide).css({"background-position":"0px -58px"});
			}
			
			function activatePicture (obj)
			{
				current_slide = $(obj).index();
				
				deactivateAllPicture();
				
				$(obj).addClass ("active");	
			}

			function deactivateAllText ()
			{
				$("ul.slider-text li").removeClass ("active");
			}
			
			function deactivateAllPicture ()
			{
				$("ul.slider-picture li").removeClass ("active");
			}
			
			function clearPictograms ()
			{
				$(".pictogram").css({"background-position":"0px 0px"});
			}

			function switch_slideshow()
			{
			  var next_slide = (current_slide + 1) % 4;

			  var next_slide_obj = $("ul.slider-text li:eq(" + next_slide + ")");
			  
			  activateText (next_slide_obj);
			  
			  var next_slide_obj = $("ul.slider-picture li:eq(" + next_slide + ")");
			  
			  activatePicture (next_slide_obj);
			}
			
			$(document).ready(function() {

				slideshow_interval = setInterval ("switch_slideshow()", 3500);	// switch slideshow every 3.5 seconds;				

				$(".pictogram").hover(
					function () {
						clearInterval (slideshow_interval);
					}
				);

				/* SLIDESHOW */
			
				current_slide = 0;
				
				activateText ($("ul.slider-text li").first());
				activatePicture ($("ul.slider-picture li").first());
				
				$("ul#pictograms li").mouseover (function ()
				{
					clearInterval (slideshow_interval);
					
					current_slide = $(this).index();
					
					var current_slide_obj = $("ul.slider-text li:eq(" + current_slide + ")");
		  
					activateText (current_slide_obj);
		  
					var current_slide_pic_obj = $("ul.slider-picture li:eq(" + current_slide + ")");
		  
					activatePicture (current_slide_pic_obj);
				});
				
			});