function showDialogWindow(url,name,width,height) {
  var posX = (screen.width - width) / 2;
  var posY = (screen.height - height) / 2;
	var win = openWindow(url,name,width,height,posX,posY);
	win.focus();
}

function openWindow(url,name,width,height,posX,posY) {
  var popWindow=window.open(url,name,'left='+posX+',top='+posY+',width='+width+',height='+height+',scrollbars=yes,menubar=no,status=yes,resizable=yes')
  return popWindow;
}

function showFoto(elemID) {
  var elem = document.getElementById(elemID);
  var url = elem.href;
  showDialogWindow(url,"Foto",420,510);
}

function showDossierPrint(url) {
  showDialogWindow(url,"DossierPrint",640,800);
}