erg = 0;


if(document.all){                       //falls Explorer
                var ie =true;
                var layRef = "all."; 
                var styRef = ".style";} 
if(document.layers){                    //falls Navigator
                var ns = true; 
                var layRef = ""; 
                var styRef = "";}

if(document.getElementById && navigator.appName == "Netscape"){ //falls NS6
                var ns6 = true; 
                var layRef = "getElementById('"; 
                var styRef = "').style";
}
function getRef(obj) //Referenz auf Objekte
{
        var objRef;
        if(typeof obj == "string"){
                objRef = eval("document." + layRef + obj + styRef);
                                  }
        else { 
                objRef = obj; //obj enthält bereits Referenz
                 }
        return objRef;   //Referenz zurückliefern
}
var IE = document.all?true:false;
if (!IE) document.captureEvents(Event.MOUSEMOVE)
document.onmousemove = getMouseXY;
var koordX = 0;
var koordY = 0;
function getMouseXY(e) {
  if (IE)
  {
    koordX = event.clientX + document.body.scrollLeft;
    koordY = event.clientY + document.body.scrollTop;
  } else {
    koordX = e.pageX;
    koordY = e.pageY;
  }  
  return true;
}
function over(system)
{

  getRef(system).visibility = 'visible'; 
  getRef(system).left = (koordX - 15) + 'px';
  getRef(system).top  = (koordY - 110) + 'px';   
} 

function out(system)
{
  getRef(system).visibility = 'hidden';
}