function popup_a1()
{
 MeinFenster =
 window.open("grafiken/a1.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}


function popup_a2()
{
 MeinFenster =
 window.open("grafiken/a2.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}


function popup_a3()
{
 MeinFenster =
 window.open("grafiken/a3.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}


function popup_a4()
{
 MeinFenster =
 window.open("grafiken/a4.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}


function popup_a5()
{
 MeinFenster =
 window.open("grafiken/a5.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}


function popup_b1()
{
 MeinFenster =
 window.open("grafiken/b1.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}

function popup_b2()
{
 MeinFenster =
 window.open("grafiken/b2.jpg", "Zweitfenster", "width=620,height=620,scrollbars");
 MeinFenster.focus();
}