var is_ie = (navigator.userAgent.indexOf('MSIE') >= 0) ? 1 : 0; 
var is_ie5 = (navigator.appVersion.indexOf("MSIE 5.5")!=-1) ? 1 : 0; 
var is_opera = ((navigator.userAgent.indexOf("Opera6")!=-1)||
                (navigator.userAgent.indexOf("Opera/6")!=-1)) ? 1 : 0; 
var is_netscape = (navigator.userAgent.indexOf('Netscape') >= 0) ? 1 : 0; 

var xmlHttp; 
var AJAXContainer;

function runAJAX(requestURL, queryStr, containerID)
{
    var url = requestURL; 
    AJAXContainer = document.getElementById(containerID)
    xmlHttp = GetXmlHttpObject(ChangeHandler); 
    url += '?query=' + queryStr; 
    xmlHttp_Get(xmlHttp, url); 
} 

function ChangeHandler() 
{ 
    if (xmlHttp.readyState == 4 || 
        xmlHttp.readyState == 'complete'){ 
        var str = xmlHttp.responseText; 
        if(AJAXContainer)
        {
            AJAXContainer.innerHTML = str; 
        }
    } 
    else 
    { 
        if(AJAXContainer)
        {
            //AJAXContainer.innerHTML = "Your record is loading "; 
        }
    } 
} 

function runAJAXValue(requestURL, queryStr, containerID)
{
    var url = requestURL; 
    AJAXContainer = document.getElementById(containerID)
    xmlHttp = GetXmlHttpObject(ChangeHandlerValue); 
    url += '?query=' + queryStr; 
    xmlHttp_Get(xmlHttp, url); 
} 

function ChangeHandlerValue() 
{ 
    if (xmlHttp.readyState == 4 || 
        xmlHttp.readyState == 'complete'){ 
        var str = xmlHttp.responseText; 
        if(AJAXContainer)
        {
            AJAXContainer.value = str; 
        }
    } 
    else 
    { 
        if(AJAXContainer)
        {
            //AJAXContainer.innerHTML = "Your record is loading "; 
        }
    } 
} 

function xmlHttp_Get(xmlhttp, url) 
{ 
    xmlhttp.open('GET', url, true); 
    xmlhttp.send(null); 
} 

function GetXmlHttpObject(handler) { 
    var objXmlHttp = null;//Create the local xmlHTTP object instance 

    //Create the xmlHttp object depending on the browser 
    if (is_ie){ 
        //if not IE default to Msxml2 
        var strObjName = (is_ie5) ? 'Microsoft.XMLHTTP' : 
                                    'Msxml2.XMLHTTP'; 

        //Create the object 
        try{ 
            objXmlHttp = new ActiveXObject(strObjName); 
            objXmlHttp.onreadystatechange = handler; 
        } 
        catch(e){ 
            //Object creation error 
            alert('Object cannot be created'); 
            return; 
        } 
    } 
    else if (is_opera){ 
        alert('Opera browser'); 
        return; 
    } 
    else{ 
        // other browsers eg mozilla , netscape and safari 
        objXmlHttp = new XMLHttpRequest(); 
        objXmlHttp.onload = handler; 
        objXmlHttp.onerror = handler;     } 

    //Return the instantiated object 
    return objXmlHttp; 
}