function bcFrames(URL1,F1,URL2,F2)
{  
	 parent.frames[F1].location.href=URL1;
	 parent.frames[F2].location.href=URL2;
}
function abcFrames(URL1,URL2,URL3)
{  
	 open(URL1,"title");
	 open(URL2,"menu");
	 open(URL3,"content");
}
function intro() 
{
	location.href='intro.htm'
}
function plan() 
{
F1 = open("lageplan.htm","Fenster1","width=342,height=450,screenX=0,screenY=0,resizable=yes");
}