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//该源码下载自www.51aspx.com(51aspx.com)
var http_request = false;
function send_request(method,url,content,responseType,callback){
http_request=false;
if(window.XMLHttpRequest){//Mozilla浏览器
http_request=new XMLHttpRequest();
if(http_request.overrideMimeType){
http_request.overrideMimeType("text/xml");
}
else{
try{
http_request=new ActiveXObject("Msxml2.XMLHTTP");
}catch(e){