// New Request Function
// Compatible with most New and old Browsers
function getRequest() {
    var xmlHttp;
    try {
        // Firefox, Opera 8.0+, Safari
        xmlHttp=new XMLHttpRequest();
        return xmlHttp;
    } catch (e) {
        // Internet Explorer
        try {
            // Internet Explorer 6.0+
            xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
            return xmlHttp;
        } catch (e) {
            try {
                // Internet Explorer 5.5+
                xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
                return xmlHttp;
            } catch (e) {
                alert("Your browser does not support AJAX!");
                return false;
            }
        }
    }
}

// Old Request Function
// Doesn't Seem compatible with IE7
/*function getRequest() {
    var xmlhttp=false;
    /*@cc_on @*/
    /*@if (@_jscript_version >= 5)
    // JScript gives us Conditional compilation, we can cope with old IE versions.
    // and security blocked creation of the objects.
     try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
     } catch (e) {
      try {
       xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
       xmlhttp = false;
      }
     }
    @end @*//*
    if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
        try {
            xmlhttp = new XMLHttpRequest();
        } catch (e) {
            xmlhttp=false;
        }
    }
    if (!xmlhttp && window.createRequest) {
        try {
            xmlhttp = window.createRequest();
        } catch (e) {
            xmlhttp=false;
        }
    }

    return xmlhttp;
}*/