function newImage(arg) {

        if (document.images) {

                rslt = new Image();

                rslt.src = arg;

                return rslt;

        }

}



function changeImages() {

        if (document.images && (preloadFlag == true)) {

                for (var i=0; i<changeImages.arguments.length; i+=2) {

                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];

                }

        }

}



var preloadFlag = false;

function preloadImages() {

        if (document.images) {

                ans = newImage("../img/druck-ov.jpg");

                preloadFlag = true;

        }

}



function visi(id) {

document.getElementById(id).style.visibility = 'visible';

document.getElementById(id).style.display = 'block';

}

function novisi() {

document.getElementById('a1').style.visibility = 'hidden';

document.getElementById('a2').style.visibility = 'hidden';

document.getElementById('a3').style.visibility = 'hidden';

document.getElementById('a1').style.display = 'none';

document.getElementById('a2').style.display = 'none';

document.getElementById('a3').style.display = 'none';

return true;

}

function novisi5() {

document.getElementById('a1').style.visibility = 'hidden';

document.getElementById('a2').style.visibility = 'hidden';

document.getElementById('a3').style.visibility = 'hidden';

document.getElementById('a4').style.visibility = 'hidden';

document.getElementById('a5').style.visibility = 'hidden';

document.getElementById('a1').style.display = 'none';

document.getElementById('a2').style.display = 'none';

document.getElementById('a3').style.display = 'none';

document.getElementById('a4').style.display = 'none';

document.getElementById('a5').style.display = 'none';

return true;

}



if (document.all||document.layers)

window.onresize = new Function("window.location.href=document.location.href");