var poc = 0;
function showImage(imgName, imWidth, imHeight, imgTitle)
{
if (poc !== 0) { iwin.close(); };
url = imgName;
resStr = "resizable=0,scrollbars=0";
// define window oversize
winPlusWidth = 0;
winPlusHeight = 0;
// calculate window size
winHeight = imHeight + winPlusHeight;
winWidth = imWidth + winPlusWidth;
// test if the window is not too large
heightOK = true;
if (winHeight>screen.availHeight)
{ winHeight = screen.availHeight-80;
resStr=",resizable=1,scrollbars=1";
heightOK = false;
}
if (heightOK==false)
{ winWidth = winWidth+22;
}
if (winWidth>screen.width)
{ winWidth = screen.width-80;
resStr=",resizable=1,scrollbars=1";
}
// calculate centered window position
winLeft = Math.round((screen.width-winWidth)/2);
winTop = Math.round((screen.availHeight-winHeight)/2);
iwin = window.open("", "", "left="+winLeft+",top="+winTop+",height="+winHeight+",width="+winWidth+",directories=no,location=no,menubar=no,status=no,toolbar=no"+resStr);
iwin.document.write("", imgTitle, "");
iwin.document.write("");
iwin.document.write("");
iwin.document.write("![Kliknutím na obrázek zavřete okno](\"",)
");
iwin.document.write("");
poc++;
return true;
}