var breite = 0;
var hoehe = 0;
				
function showPopupImage( htmlFile, hImage, wImage ) {
	var hWindow = hImage+70;
	var wWindow = wImage+50;
	var lWindow = (screen.width-wWindow)/2;
    	var tWindow = (screen.height-hWindow)/2;
	window.open(htmlFile,'popup','toolbar=no,top=' + tWindow + 'location=no,left='+ lWindow + 'directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes,width=' + wWindow + ',height=' + hWindow);
}

function showPopup( htmlFile, height, width ) {
   var hWindow = height;
   var wWindow = width;
   var lWindow = (screen.width-wWindow)/2;
   var tWindow = (screen.height-hWindow)/2;
   window.open(htmlFile,'popup','toolbar=no,top=' + tWindow + 'location=no,left='+ lWindow + 'directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes,width=' + wWindow + ',height=' + hWindow);
}

function showPopupScrollbar( htmlFile, height, width ) {
   var hWindow = height;
   var wWindow = width;
   var lWindow = (screen.width-wWindow)/2;
   var tWindow = (screen.height-hWindow)/2;
   window.open(htmlFile,'popup','toolbar=no,top=' + tWindow + 'location=no,left='+ lWindow + 'directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes,width=' + wWindow + ',height=' + hWindow);
}