function ajaxObject() { var xmlHttp; try { // Firefox, Opera 8.0+, Safari xmlHttp = new XMLHttpRequest(); } catch (e) { // Internet Explorer try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) { alert("您的浏览器不支持AJAX!"); return false; } } } return xmlHttp; } function httppost ( url , data , fnSucceed ){// fnFail , fnLoading ) { var ajax = ajaxObject(); ajax.open( "post" , url , true ); // ajax.setRequestHeader( "Content-Type" , "application/octet-binary" ); ajax.onreadystatechange = function () { if( ajax.readyState == 4 ) { if( ajax.status == 200 ) { fnSucceed( ajax.response); //ajax.response.size(); } else { // fnFail( "HTTP请求错误!错误码:"+ajax.status ); } } else { //fnLoading(); } } // ajax.responseType="arraybuffer"; ajax.send( data ); } function httpget ( url , data , fnSucceed ){// fnFail , fnLoading ) { var ajax = ajaxObject(); ajax.open( "get" , url , true ); // ajax.setRequestHeader( "Content-Type" , "application/octet-binary" ); ajax.onreadystatechange = function () { if( ajax.readyState == 4 ) { if( ajax.status == 200 ) { fnSucceed( ajax.response); //ajax.response.size(); } else { // fnFail( "HTTP请求错误!错误码:"+ajax.status ); } } else { //fnLoading(); } } // ajax.responseType="arraybuffer"; ajax.send( data ); }