// windows funktionen
var STD_win;

function openWin(uri, width, height, scroller) {

var pos;

var x=screen.availWidth;
var y=screen.availHeight;
var scrolling = 'no';

 if( openWin.arguments.length >= 4) {
	 scrolling = scroller;
 }
 x=(x-width)/2;
 y=(y-height)/2;
 pos = ',screenX=' + x + ',screenY=' + y +',left=' + x + ',top=' + y;

 STD_win = window.open(uri, 'STD_win', 'toolbar=no,resizeable=no,scrollbars=' + scrolling + ',status=no,width=' + width +',height=' + height +'' + pos);
 STD_win.focus();
 STD_win.opener=this;
 return (STD_win == null);
}