var tmp_id = '';
    var item = new Array(99999);

    function showtip(e,id) {
      var url = "hole_tooltip.php?itemid=" + id;
      
      if(item[id] == null)
      {
        document.getElementById('toolBox').innerHTML = "Sekunde bitte ich suche...";
        tmp_id = id;
        retrieveURL(url);
      }
      else
      {
        document.getElementById('toolBox').innerHTML = item[id];
      }
      showtipatcursor(e);
    }
    
    function retrieveURL(url) {
      if (window.XMLHttpRequest) { // Non-IE browsers
        req = new XMLHttpRequest();
        req.onreadystatechange = processStateChange;
        try {
          req.open("GET", url, true);
        } catch (e) {
                alert(e);
        }
        req.send(null);
      } else if (window.ActiveXObject) { // IE
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
          req.onreadystatechange = processStateChange;
          req.open("GET", url, true);
          req.send();
        }
      }
    }
    
    function processStateChange() {
      if (req.readyState == 4) 
      { // Complete
        if (req.status == 200) 
        { // OK response
          if (req.responseText.length > 0)
          {
            document.getElementById('toolBox').innerHTML = req.responseText;
            item[tmp_id] = req.responseText;
          }
          else
          {
            document.getElementById('toolBox').innerHTML = "Die Itemid konnte nicht identifizert werden!";
            item[tmp_id] = "Die Itemid konnte nicht identifizert werden!";
          }
        } else {
                alert("Problem: " + req.statusText);
        }
      }
    }
  
    function showtipatcursor(e) 
    {
      var obj = document.getElementById('tooltipcontainer');
      obj.style.display = "block";
      
    	wHeight = document.body.clientHeight+document.body.scrollTop;
      lHeight = obj.offsetHeight;

      if (document.all&&!window.opera) { 
        y = event.clientY + 10 + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop);
        x = event.clientX + 10 + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft);
        
      } else {
        y = e.pageY + 10;
        x = e.pageX + 10;
      }
      
      fHeight = y + lHeight;
      
      if(fHeight > wHeight)
      {
        tmpvar = fHeight - wHeight;
        obj.style.top = (y - tmpvar) +"px";
        obj.style.left = x +"px";        
      }
      else
      {
        obj.style.top = y +"px";
        obj.style.left = x +"px";
      }      
    }
  
    function hidetip() 
    {
      var obj = document.getElementById('tooltipcontainer');
      obj.style.display = "none";
    }