// the general server interaction method - uses Ajax to call the server with
	// the 'target' request...
  function callServer(target, handlerMethod) {
    
    req = getXMLHttpRequest();
    
    // get the test document; will populate the headers as well:-)
    req.onreadystatechange = handlerMethod;
    
		req.open("GET", target, true);
		req.send(null);
    
  }

	// generic handling method; calls a page-specific javascript method when ready...  
  function handleProcessing() {
    if (req.readyState==4) {

      var doc_val = req.responseText;

			// this is defined once for each page that uses Ajax, to handle it's 
			// special case(s)
      handleAjaxResults(doc_val);
    }
  }
  
  function emptyAjaxHandler() {
  }

	// the XMLHttpRequest object...
  var req;

  // IE and FF don't much like each other...
	function getXMLHttpRequest() {

	  var xmlhttp;
	
	  /*@cc_on
	
	  @if (@_jscript_version >= 5)
	
	    try {

	      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	
	    } catch (e) {
	      try {
	        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	      } catch (E) {
	        xmlhttp = false;
	      }
	    }
	
	  @else
	
	  xmlhttp = false;
	
	  @end @*/
	
	  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
	    try {
	
	      xmlhttp = new XMLHttpRequest();
	
	    } catch (e) {
	      xmlhttp = false;
	    }
	  }
	
	  return xmlhttp;
	}

	// sends a logout request to the server, then closes the current window (if opened by javascript, anyway)
	function logout() {
		// send Logout
		var logout_call = 'http://www1.subimo.com/ca/app/bcbslacore/CoverageAdvisor?Action=Logout';
		callServer(logout_call, emptyAjaxHandler)
			}