function swap(item, stan) {
    imgid = document.getElementById('menu'+item);
    imgid.src = "_img_menu/menu_" + item + "_" + stan + ".gif";
}

function ch_color2(kolor, elem) {
	elem.style.background=kolor; return true;
}

function zmien(kolor, elem) {
	document.getElementById(elem).style.display=kolor;	 
	return true;
}


function ch_color(kolor, elem) {
	elem.style.background=kolor; return true;
}

function displayWindow1(url) {
        var Win = window.open(url,'','width=578,height=560,resizable=0,scrollbars=no,menubar=no' );
}
function displayWindow2(url) {
        var Win = window.open(url,'','width=573,height=443,resizable=0,scrollbars=yes,menubar=no' );
}

function displayWindow3(url) {
        var Win = window.open(url,'','width=573,height=580,resizable=0,scrollbars=yes,menubar=no' );
}
function displayWindow4(url) {
        var Win = window.open(url,'','resizable=yes,scrollbars=yes,menubar=no' );
} 
function displayWindow5(url) {
        var Win = window.open(url,'','width=598,height=560,resizable=0,scrollbars=yes,menubar=no' );
}