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<script type="text/javascript">
function creatXMLHttpRequest(){
if(window.ActiveXObject){
xmlHttp=new ActiveXObject('MIcrosoft.XMLHTTP');
}else if(window.XMLHttpRequest){
xmlHttp=new XMLHttpRequest();
}
}
function validate(p){
creatXMLHttpRequest();
var url = "servlet/UpdateByPort?id="+p;
xmlHttp.open("get",url,true);
xmlHttp.onreadystatechange=callback;
xmlHttp.send(null);
}
function callback(){
if(xmlHttp.readyState==4){
if(xmlHttp.status==200){
var mes= xmlHttp.responseText;
setMessage(mes);
}else{
alert(xmlHttp.status);
}
}
}
function setMessage(message){
var messageArea=document.getElementById("di");
messageArea.innerHTML="<h1>"+message+"</h1>";
}
</script>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>UpdateByPort</servlet-name>
<servlet-class>com.helphand.servlet.UpdateByPort</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>UpdateByPort</servlet-name>
<url-pattern>/servlet/UpdateByPort</url-pattern>
</servlet-mapping>