function quer (Bild1)
{
  Fenster1 = window.open(Bild1, "Zweitfenster", "width=410,height=310,left=100,top=200");
  Fenster1.focus();
}

function quer2 (Bild1)
{
  Fenster1 = window.open(Bild1, "Zweitfenster", "width=800,height=580,left=50,top=50");
  Fenster1.focus();
}

function quer3 (Bild1)
{
  Fenster1 = window.open(Bild1, "Zweitfenster", "width=600,height=750,left=50,top=50");
  Fenster1.focus();
}