function callimageAjax(url) {
	alert('dd');
   myRequest = new XMLHttpRequest();
   myRequest.open("GET", url, true);
   myRequest.onreadystatechange = handleAjaxResponse;
   myRequest.send(null);
}

function handleAjaxResponse() {
   if (myRequest.readyState == 4) {
      if (myRequest.status == 200) {
         document.getElementById('tmainimage').innerHTML = myRequest.responseText ;
      } else {
         //alert ('An error occurred: ' + myRequest.statusText);
      }
   }
}