/*

 Dynamic Javascript Roll-Menue

 (c) 2004 - 2007 Tappertzhofen
 All rights reserved.


*/


function init() {
  document.getElementById("menue1").style.visibility = "hidden";
  document.getElementById("menue2").style.visibility = "hidden";
  document.getElementById("menue3").style.visibility = "hidden";
  document.getElementById("menue4").style.visibility = "hidden";
}

function showmenue(n,x,y) {

  var name = navigator.userAgent.toLowerCase();
  var ie = (name.indexOf("msie")>-1);

  init();

  if(!ie) {
  	breite=window.innerWidth;
  } else {
	if(navigator.appVersion >= 6) {
		breite = document.body.clientWidth;	
	} else {
		breite = document.body.clientWidth;
	}
  }

  if(breite < 800) {
    breite = 800;
  }


  // Berechne linke Kante:

  links = (breite / 2) - (780 / 2);

  // Alle Angaben sind für 1280 ausgelegt, berechne daher Startwert:
  l1280 = 250;
  
  if(breite != 1280) {
    x = x - l1280 + links;
  }

  x = x - 5;
  if(!ie) { 
	y = y - 8; 
	x = x + 8;
  } else {
  }

	
  // alert(window.scrollbars.visible);

  document.getElementById(n).style.visibility = "visible";
  document.getElementById(n).style.left = x;
  document.getElementById(n).style.top = y;

}


function hidemenue(n) {
  document.getElementById(n).style.visibility = "hidden";
  document.getElementById(n).style.left = -1000;
  document.getElementById(n).style.top = -1000;
}