function popup1(url)
{
MeinFenster1 =
   window.open(url, "Volksfest_Straubing", "width=400,height=400");
   MeinFenster1.focus();
}

function popup2(url)
{
MeinFenster1 =
   window.open(url, "Volksfest_Straubing", "width=480,height=420");
   MeinFenster1.focus();
}

function popup3(url)
{
MeinFenster1 =
   window.open(url, "Volksfest_Straubing", "width=480,height=430");
   MeinFenster1.focus();
}

function popup4(url)
{
MeinFenster1 =
   window.open(url, "Volksfest_Straubing", "width=530,height=450");
   MeinFenster1.focus();
}