function getXmlHttpN(){
	  var xmlhttp;
	  try {
	    xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	  } catch (e) {
	    try {
	      xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	    } catch (E) {
	      xmlhttp = false;
	    }
	  }
	  if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
	    xmlhttp = new XMLHttpRequest();
	  }
	  return xmlhttp;
	}

function Login () {
        
var User = document.getElementById("User").value;
        
var Kennwort = document.getElementById("Password").value;

var req = getXmlHttpN();
req.open('GET', 'javascript/host.txt?r='+Math.random(), true);  
req.onreadystatechange = function() { 
	       
	        if (req.readyState == 4) {
 
	            if(req.status == 200) {
	               
	                var Host = req.responseText;
					
					var URL = Host.concat ("/autologin?user=",User, "&password=",Kennwort);
        
					fenster = window.open(URL, "fenster1", "width=1024,height=860,status=yes,scrollbars=yes,resizable=yes");
					  
					fenster.focus();
					
						  }
					
	            }
	            
	        }
	 
	    
   
req.send(null);  
}