function createRequestObject() 
{ 
    var ro; 
    var browser = navigator.appName; 
    if(browser == "Microsoft Internet Explorer")
    {
        ro = new ActiveXObject("Microsoft.XMLHTTP"); 
    }
    else
    {
        ro = new XMLHttpRequest(); 
    } 
    return ro;
}

var http = createRequestObject();

function sendReq(proc, control) 
{
    var ctrl = document.getElementById(control);
    var text = ctrl.value;
    http.open('POST', 'AjaxHelper.aspx?proc='+proc+'&value='+text);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

//function handleResponse() 
//{ 
//    if(http.readyState == 4)
//    { 
//        var response = http.responseText;
//        document.getElementById('Text1').value = response; 
//    }
//}