function getHTTPObject(){
  if (window.ActiveXObject) return new ActiveXObject("Microsoft.XMLHTTP");  
  else if (window.XMLHttpRequest) return new XMLHttpRequest();  
  else {  
    alert("Ihr Browser unterstuetzt kein Java-Script.");  
    return null;  
  }
}

// Change the value of the outputText field
function setOutput(){
  if(httpObject.readyState == 4){
    //document.getElementById('outputText').value = httpObject.responseText;
    
    //var str = "<img src='simi.jpg'>";
    var str = "<img src='"+httpObject.responseText+"'>";
    document.getElementById("bigview").innerHTML = str;
       
  }
}

// Implement business logic
function ChangeImg(img){	
  httpObject = getHTTPObject();  
  if (httpObject != null) {  		
    //httpObject.open("GET", "changeImg.php?img="+document.getElementById('inputText').value, true);
    httpObject.open("GET", "/ajax/img/changeImg.php?img="+img, true);
    httpObject.send(null);
    httpObject.onreadystatechange = setOutput;  
  }
}

var httpObject = null;