function leereSuchfeld()	{
	if(document.such.qu.value == 'Suchbegriff') document.such.qu.value = '';
}
function var_win(url,w,h)	{
		var winvar = window.open(url,"varwin","width="+w+",height="+h+",toolbar=0,status=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1");
		winvar.focus();
}