function ZweiFrames(URL1,F1,URL2,F2)   {  
    parent.frames[F1].location.href=URL1;
    parent.frames[F2].location.href=URL2;   
}

function DreiFrames(URL1,F1,URL2,F2,URL3,F3)   {  
    parent.frames[F1].location.href=URL1;
    parent.frames[F2].location.href=URL2;   
    parent.frames[F3].location.href=URL3;   
}