// Druckvorschau Popup
var Fenster = null;
 function pre(meineSeite,meinName,w,h,scroll){
  LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
  TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
  settings ='height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=NO';
  Fenster = window.open(meineSeite,meinName,settings);
	if(Fenster == null)
	/* if the pointer to the window object in memory does not exist
	 or if such pointer exists but the window was closed */
	{
		alert("Please deaktivate the popup blocker for " + window.location.host);
	}
 }