function zmienMenu(idKanal){
		document.getElementById('menu_top_a_'+idKanal).className='expanded';
		document.getElementById('menu_top_div_'+idKanal).className+=' expanded'; 
}

function pop(plik,w,h){
			aw=800;
			ah=600;
			okno = null;
			if(window.screen){
				aw = screen.availWidth;
				ah = screen.availHeight;
			}
			dane="width="+w+",height="+h+",left="+(aw-w)/2+",top="+(ah-h)/2+",toolbar=no,location=no,directories=no,"
			+"status=no,menubar=no,scrollbars=yes,resizable=no";
			okno=window.open(plik,'pop',dane);
		}

function ProlongSession() { 
	var Timeout = 1 * 60 * 1000;
	var oImage = new Image; oImage.src = "images/pixel.gif?" + Math.random(); 
	setTimeout("ProlongSession();", Timeout);
	
 }