function changeParentsLoc(URL)
{  
    parent.location.href=URL;

}


function setBAbstrakt()
{
	frame3.location.href="bg_frame32.html";
//	frame3.location.reload();
//	frame3.location="bg_frame32.html";
//	parent.frame3.src="bg_frame32.html";
}

function setBNatur()
{
	frame3.location.href="bg_frame31.html";

}

function setBObjekte()
{
	frame3.location.href="bg_frame33.html";

}