function dd(id) {
	// return document.getElementById(id);
    var ie = (document.getElementById && document.all);
    var ns = (document.getElementById && !document.all);
    if(ie) {
           return document.all[id];
    }
    if(ns) {
           return document.getElementById(id);
    }	
}
function displayWindow(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=no,menubar=no,left=50,top=10');
}
function pokaz_blok(co) {
	pokaz = dd(co);
	pokaz.style.display = 'block';
	dd('strona').style.height = NULL;	
}
function ukryj_blok(co) {
	ukryj = dd(co);
	ukryj.style.display = 'none';
	dd('strona').style.height = '530px';
}
var okienko;
function okno(dana) {
	if( !okienko || okienko.closed ) {
	    document.cookie = "form=rez";
    	document.cookie = "pole=" + dana.name;
    	document.cookie = "value=" + dana.value;
    	var left = screen.width/2 - 200;
    	var top = screen.height/2 - 130;
    	okienko = window.open("calendar_pol.php","subWindow","height=250,width=400,left=" + left + ",top=" + top);
	} else {
    	okienko.focus();
	}
}