var bigWindow = null;
function showBig(datei){
	if (bigWindow && bigWindow.closed){
			bigWindow = null;
	}
	if (bigWindow && !bigWindow.closed){
			bigWindow.close();
			bigWindow =window.open(datei,"","width=800px,height=600px");	
			bigWindow.focus();
			bigWindow.moveTo(0,0)
	}
	if(!(bigWindow)){
		bigWindow =window.open(datei,"","width=800px,height=600px");	
		bigWindow.focus();
		bigWindow.moveTo(0,0)
	}
}

var bigWindowM = null;
function showBigMesse(datei,x,y){
	datei = "showmesse.php?datei=" + datei;
	
	var x = "width=" + x + "px";
	var y = "height=" + y + "px";
	
	var options = "\"" + x + "," + y + "\"";
	
	
	if (bigWindowM && bigWindowM.closed){
			bigWindowM = null;
	}
	if (bigWindowM && !bigWindowM.closed){
			bigWindowM.close();
			bigWindowM =window.open(datei,"",options);	
			bigWindowM.focus();
			bigWindowM.moveTo(0,0)
	}
	if(!(bigWindowM)){
		bigWindowM =window.open(datei,"",options);	
		bigWindowM.focus();
		bigWindowM.moveTo(0,0)
	}
}