function fullscreen(){
	window.moveTo(0,0);
	w = screen.availWidth;
	//w = 710;
	//var yOffset = 120;
	var yOffset = 0;
	h = screen.availHeight-yOffset;
	if((w/h) > 2) {
		w = w/2; 
	}
	window.resizeTo(w,h);
	window.moveTo(0,yOffset);
}

function popup(url, width, height) {
  var xpos = screen.availWidth / 2 - width;
  var ypos = screen.availHeight / 2 - height;
  var win = window.open(url, 'popupAbstimmen', 'width=' + width + ',height=' + height +',left=' + xpos + ',top=' + ypos + ',status=yes');
  win.focus();
}