function loadimg_bul() { 
		var perc = Math.round((loaded_bul/count_el_bul)*100);   			// update progress bar
		document.getElementById("loader_perc_bul").style.width = perc + "px";

		if (loaded_bul == count_el_bul) {									// init slideshow
			startup_bul();
		} else {
			window.setTimeout("loadimg_bul();", 200); 
		}	
	}

 	loadimg_bul();  
	
	function startup_bul() { 
		for (var a = 1; a < count_el_bul; a++) { setOpacity(0,'bul_'+a); } 	// set opacity to 0 for all divs
		document.getElementById("bul_0").style.zIndex = 10; 								// move first element to top
		opacity("loader_bul", 100, 0, 500); 												// fade out loader
		window.setTimeout("switcher_bul()", 3800);											// begin loop
	}

	function switcher_bul() { 
		old_el_bul = cur_el_bul;
		cur_el_bul++;
		if (cur_el_bul >= count_el_bul) {   cur_el_bul = 0;   }

		var this_el = "bul_"+cur_el_bul;
		var old_el  = "bul_"+old_el_bul;
		
		changeOpac(0, this_el); 																			// move new img div to top, and fade in
		document.getElementById(this_el).style.zIndex = zorder_bul; 
		zorder_bul++; 
		opacity(this_el, 0, 100, 1200); 

		window.setTimeout("switcher_bul()", 5000);
		window.setTimeout("setOpacity(0,'" + old_el + "')", 1200);											// hide old img div (necessary for stacked rounded corners antialiasing issue)
	}