function xmlhttpPost(strURL, strSubmit, 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(strSubmit);
}

function xmlHttpPostXml(strURL, strSubmit, 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.responseXML;
        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(strSubmit);
}

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.');
        }
}