function zaznacz() {
	for (i=1; i<=1000; i++) {
		nazwa = 'id_'+i;
		document.form1.elements[nazwa].checked=true;
	}
}
function odznacz() {
	for (i=1; i<=1000; i++) {
		nazwa = 'id_'+i;
		document.form1.elements[nazwa].checked=false;
	}
}
function create_window (url, image, width, height) {
	width = width;
	height= height;
	if (window.popup_windom && !window.popup_window.closed) {
		window.popup_window.resizeTo(width, height);
	}
	var window_specs = "location=no, scrollbars=no, memubars=no, toolbars=no, resizable=no, left=0, top=0, width=" + width + ", height=" + height;
	var url = url + image;
	popup_window = window.open(url, "PictureWindow", window_specs);
	popup_window.focus();
}