/ Preload /
  

if (document.images) {			
 
  home_1 = new Image();
  home_1.src = "/images/mainmenue/home_off.gif";
  home_2 = new Image();
  home_2.src = "/images/mainmenue/home_on.gif";
  
  triplesense_1 = new Image();
  triplesense_1.src = "/images/mainmenue/triplesense_off.gif";
  triplesense_2 = new Image();
  triplesense_2.src = "/images/mainmenue/triplesense_on.gif";
  
  leistungen_1 = new Image();
  leistungen_1.src = "/images/mainmenue/leistungen_off.gif";
  leistungen_2 = new Image();
  leistungen_2.src = "/images/mainmenue/leistungen_on.gif";
  		
  methodik_1 = new Image();
  methodik_1.src = "/images/mainmenue/methodik_off.gif";
  methodik_2 = new Image();
  methodik_2.src = "/images/mainmenue/methodik_on.gif";
  
  projekte_1 = new Image();
  projekte_1.src = "/images/mainmenue/projekte_off.gif";
  projekte_2 = new Image();
  projekte_2.src = "/images/mainmenue/projekte_on.gif";
  
  presse_1 = new Image();
  presse_1.src = "/images/mainmenue/presse_off.gif";
  presse_2 = new Image();
  presse_2.src = "/images/mainmenue/presse_on.gif";
  
  kontakt_1 = new Image();
  kontakt_1.src = "/images/mainmenue/kontakt_off.gif";
  kontakt_2 = new Image();
  kontakt_2.src = "/images/mainmenue/kontakt_on.gif";

 
  }

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
    document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1]+".src");
	}
  }
}

function confirmClick(url, message) {
    var confirmed = confirm(message);
    
    if(confirmed) {
        location.href = url;
    }
}

function openEditWindow(url) {
    var x = screen.width/2-310;
    var y = screen.height/2-250;

    edit_window = window.open(url, 'ew', 'width=620,height=500,left=0,top=0,screenX=0,screenY=0,left='+x+',top='+y+',scrollbars');
    edit_window.focus();
}

function show(objekt) {
    if(document.getElementById) {
        document.getElementById(objekt).style.visibility = 'visible';
    }
}

function hide(objekt) {
    if(document.getElementById) {
        document.getElementById(objekt).style.visibility = 'hidden';
    }
}

function popup(url) {
    var height = 594;
    var width = 816;
  
    var options = "height="+height+",width="+width+",resizeable=false,scrollbars=no,status=no";
  
    if(window.screen) {
        var ah = screen.availHeight - 30;
        var aw = screen.availWidth - 10;

        var xc = (aw - width) / 2;
        var yc = (ah - height) / 2;

        options += ",left=" + xc + ",screenX=" + xc;
        options += ",top=" + yc + ",screenY=" + yc;
    }

    popupwindow = window.open(url, 'popup', options);
    popupwindow.focus();
}