Edit file File name : ajax.js Content :function xmlhttpPost(strURL, strValue, strResultFunc) { var xmlHttpReq = false; // Mozilla/Safari if (window.XMLHttpRequest) { xmlHttpReq = new XMLHttpRequest(); // xmlHttpReq.overrideMimeType('text/xml'); } // IE else if (window.ActiveXObject) { xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP"); } xmlHttpReq.open('POST', strURL, true); xmlHttpReq.setRequestHeader('Content-Type','application/x-www-form-urlencoded'); xmlHttpReq.onreadystatechange = function() { if (xmlHttpReq.readyState == 4) { strResponse = xmlHttpReq.responseText; switch (xmlHttpReq.status) { // Page-not-found error case 404: alert('Error: Not Found. The requested URL ' + strURL + ' could not be found.'); break; // Display results in a full window for server-side errors case 500: handleErrFullPage(strResponse); break; default: // Call JS alert for custom error or debug messages if (strResponse.indexOf('Error:') > -1 || strResponse.indexOf('Debug:') > -1) { alert(strResponse); } // Call the desired result function else { eval(strResultFunc + '(strResponse);'); } break; } } } xmlHttpReq.send(strValue); } function handleErrFullPage(strIn) { var errorWin; // Create new window and display error try { errorWin = window.open('', 'errorWin'); errorWin.document.body.innerHTML = strIn; } // If pop-up gets blocked, inform user catch(e) { alert('An error occurred, but the error message cannot be' + ' displayed because of your browser\'s pop-up blocker.\n' + 'Please allow pop-ups from this Web site.'); } } Save