function slideshow(){
	var picture_delay = 3000; // in msec
    var opacity_delay = 2; // in msec
    var min_opacity_step = 0;
    var max_opacity_step = 50;
    // pictures array
    var arr_div_pic = new Array();
    var arr_slides = document.getElementsByTagName('DIV');
	var div_cnt = 0;
    for (var i = 0; i < arr_slides.length; i++){
 		try{
 			// take only div, which contain slideshow pictures
 			if(arr_slides[i].getAttribute('type') == 'slideshow'){
 		                arr_div_pic[div_cnt] = arr_slides[i];
 				div_cnt++;
 			}
 		}catch(e){}
     }
     // array of start image style
     var arr_startStyle = new Array();
     var count_pic = arr_div_pic.length;
     for (var i = 0; i < count_pic; i++){
     		for(var j = 0; j < arr_div_pic[i].childNodes.length; j++){
            	if (arr_div_pic[i].childNodes[j].nodeType==1 && arr_div_pic[i].childNodes[j].nodeName.toUpperCase()=='IMG'){
                	arr_div_pic[i]=arr_div_pic[i].childNodes[j];
                    break;
                }
            }
			arr_startStyle[i] = arr_div_pic[i].style.cssText;
     }
	var cur_pic = 0;
    function show_img(step, next_pic) {
		try{
        	arr_startStyle[next_pic] = arr_startStyle[next_pic].replace(/none/,'block');
            var trans1 = parseFloat(step)/max_opacity_step;
            var trans2 = 1-(parseFloat(step)/max_opacity_step);
            var transPattern1 = "; filter:alpha(opacity="+Math.round(100*trans1)+");-moz-opacity:"+trans1+";opacity:"+trans1+";";
            var transPattern2 = "; filter:alpha(opacity="+Math.round(100*trans2)+");-moz-opacity:"+trans2+";opacity:"+trans2+";";
            arr_div_pic[cur_pic].style.cssText = arr_startStyle[cur_pic] + transPattern1;
            arr_div_pic[next_pic].style.cssText = arr_startStyle[next_pic] + transPattern2;
            if(step > min_opacity_step){
 			  // while opacity is not 0
             	step--;
 			  	delay = opacity_delay;
			}else{
 			  // if opacity is 0 - change pictures pair
 				arr_div_pic[cur_pic].style.cssText = arr_startStyle[cur_pic].replace(/block/,'none');
 				arr_startStyle[cur_pic] = arr_startStyle[cur_pic].replace(/block/,'none');
 				cur_pic = next_pic;
             	if ((next_pic+1) < count_pic)
                	next_pic++;
				else
                	next_pic = 0;
				step = max_opacity_step;
 				delay = picture_delay;
             }
             setTimeout(function(){show_img(step, next_pic)}, delay);
         }catch(e){}
    }
	setTimeout(function(){show_img(max_opacity_step, (cur_pic+1))}, picture_delay);
}