function powieksz(plik,width,height)
{
 var x=width;
 var y=height;
 window.open(plik,"Zdjêcie",'width='+x+',height='+y+',scrollbars=0,resizable=0,resize=no');
}

function HideContent(d) {
document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
document.getElementById(d).style.display = "block";
}
function ReverseDisplay(d) {
if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
else { document.getElementById(d).style.display = "none"; }
}