var request;var urlFragment="http://www.parkerriver.com/s/sender?name=guest";var st;function getAllHeaders(url,styl){    st=styl;    httpRequest("GET",url,true);} /*  Set one or more CSS style attributes on an DOM Element  CSS2Properties Object. stType stands for a style name, as in 'plain,''fancy,''loud,' or 'cosmo'*/function setStyle(stType,stylObj){  switch(stType){    case 'plain' :       stylObj.maxWidth="80%";      stylObj.border="thin solid black";       stylObj.padding="5%"      stylObj.textShadow="none";      stylObj.fontFamily="Arial, serif";      stylObj.fontSize="0.9em";      stylObj.backgroundColor="yellow"; break;    case 'loud' :       stylObj.maxWidth="80%";      stylObj.border="thin solid black";       stylObj.padding="5%"      stylObj.fontFamily="Impact, serif";      stylObj.fontSize="1.4em";      stylObj.textShadow="0 0 2.0em black";      stylObj.backgroundColor="rgb(181,77,79)"; break;    case 'fancy' :      stylObj.maxWidth="80%";      stylObj.border="thin solid black";       stylObj.padding="5%"      stylObj.fontFamily="Herculanum, Verdana, serif";      stylObj.fontSize="1.2em";      stylObj.fontStyle="oblique";      stylObj.textShadow="0.2em 0.2em grey";      stylObj.color="rgb(21,49,110)";      stylObj.backgroundColor="rgb(234,197,49)"; break;     case 'cosmo' :      stylObj.maxWidth="80%";      stylObj.border="thin solid black";       stylObj.padding="1%"      stylObj.fontFamily="Papyrus, serif";      stylObj.fontSize="0.9em";      stylObj.textShadow="0 0 0.5em black";      stylObj.color="aqua";      stylObj.backgroundColor="teal"; break;     default :        alert('default');         }}//event handler for XMLHttpRequestfunction handleResponse(){    try{        if(request.readyState == 4){            if(request.status == 200){                /*All headers received as a single stringt*/                var headers = request.getAllResponseHeaders( );                var div = document.getElementById("msgDisplay");                if(st){                  setStyle(st,div.style);                } else {                  setStyle("plain",div.style);                }                div.innerHTML="<pre>"+headers+"</pre>";            } else {                //request.status is 503  if the application isn't available; 500 if the application has a bug                alert(request.status);                alert("A problem occurred with communicating between the XMLHttpRequest object and the server program.");            }        }//end outer if    } catch (err)   {        alert("It does not appear that the server is available for this application. Please"+              " try again very soon. \nError: "+err.message);    }}/* Initialize a Request object that is already constructed */function initReq(reqType,url,bool){    try{        /* Specify the function that will handle the HTTP response */        request.onreadystatechange=handleResponse;        request.open(reqType,url,bool);        request.send(null);    } catch (errv) {        alert(                "The application cannot contact the server at the moment. "+                "Please try again in a few seconds." );    }}/* Wrapper function for constructing a Request object. Parameters:  reqType: The HTTP request type such as GET or POST.  url: The URL of the server program.  asynch: Whether to send the request asynchronously or not. */function httpRequest(reqType,url,asynch){    //Mozilla-based browsers    if(window.XMLHttpRequest){        request = new XMLHttpRequest();    } else if (window.ActiveXObject){        request=new ActiveXObject("Msxml2.XMLHTTP");        if (! request){            request=new ActiveXObject("Microsoft.XMLHTTP");        }     }    //the request could still be null if neither ActiveXObject    //initializations succeeded    if(request){       initReq(reqType,url,asynch);    }  else {        alert("Your browser does not permit the use of all "+        "of this application's features!");}}