noviprozor=null;
	
	function winopen(plik, w, h, scroll) {
	if(window.screen) {
	  aw=screen.availwidth;
	  ah=screen.availheight;
	}else{
	  aw=1024;
	  ah=768;
	}if(noviprozor==null || noviprozor.closed){
	 pravilo=
	 "left="+(aw-w)/2+","
	 +"top="+(ah-h)/2+","
	 +"screenX="+(aw-w)/2+","
	 +"screenY="+(ah-h)/2+","
	 +"width="+w+","
	 +"height="+h+","
	 +"toolbar=no,"
	 +"location=no,"
	 +"directories=no,"
	 +"status=np,"
	 +"menubar=no,"
	 +"scrollbars="+scroll+","
	 +"resizable=no"
	 noviprozor=window.open(plik,'novo',pravilo);
	 noviprozor.focus();
	}else{
	 noviprozor.close();
	  pravilo=
	 "left="+(aw-w)/2+","
	 +"top="+(ah-h)/2+","
	 +"screenX="+(aw-w)/2+","
	 +"screenY="+(ah-h)/2+","
	 +"width="+w+","
	 +"height="+h+","
	 +"toolbar=no,"
	 +"location=no,"
	 +"directories=no,"
	 +"status=np,"
	 +"menubar=no,"
	 +"scrollbars="+scroll+","
	 +"resizable=no"
	 noviprozor=window.open(plik,'novo',pravilo);
	 noviprozor.focus();
	}
	}
	 //->