var xmlhttpImg;

function showImg(str)
{
xmlhttpImg=GetXmlHttpObject();
if (xmlhttpImg==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var urlImg="../randPic.php";
urlImg=urlImg+"?q="+str;
urlImg=urlImg+"&sid="+Math.random();
xmlhttpImg.onreadystatechange=stateChangedImg;
xmlhttpImg.open("GET",urlImg,true);
xmlhttpImg.send(null);
}

function stateChangedImg()
{
if (xmlhttpImg.readyState==4)
{
document.getElementById("imgRotate").innerHTML=xmlhttpImg.responseText;
}
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}