function ajaxpost(refPage, paraMeter, method)
{
    try{
    
        if (window.XMLHttpRequest) { // Mozilla, Safari, ...
        
            http_request = new XMLHttpRequest();
            
        } 
        else if (window.ActiveXObject) { // IE
        
            http_request = new ActiveXObject("Microsoft.XMLHTTP");
        } 
           
        var linkurl;    
        
        if (method.toLowerCase() == 'get')
        {
            linkurl = refPage + "?" + paraMeter + ""; 
            http_request.open(method, linkurl, false);   
            http_request.send(null); 
        }
        else if (method.toLowerCase() == 'post')
        {
            linkurl = refPage;
            http_request.open(method, linkurl, false);
            http_request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");        
            http_request.send(paraMeter);             
        }

        return http_request.responseText;
    
    }
    catch (e)
    {
        //alert(e);
    }
}