function CreateWait() {
   var elem = document.getElementById('__AjaxCall_Wait');
    if (!elem) {
        elem = document.createElement("div");
        elem.id = '__AjaxCall_Wait';
        elem.style.position = 'absolute';
        
        elem.style.left  = "50%";//(document.body.offsetWidth*0.5)-110+"px"; 
        elem.style.top = "50%";
        elem.style.height = "70";
        elem.style.paddingLeft = "3px";
        elem.style.paddingRight = "3px";
        elem.style.fontSize = "9px";
        elem.style.fontFamily = 'Verdana, Tahoma';
        elem.style.border = "DarkRed 1px solid";
        elem.style.backgroundColor = "White";
        elem.style.color = "#000000";
        elem.style.cursor = "wait";
        elem.innerHTML = '<table width="220px" height="70"><tr><td align="center" valign="middle"><img src="images/ajax-loader.gif" /><br />Carregando...</td></tr></table>';
        elem.style.display = 'none';

        document.body.insertBefore(elem, document.body.firstChild);
    }
    waitElement = elem;
}
CreateWait();
xajax.loadingFunction = function(){xajax.$('__AjaxCall_Wait').style.display='block';};
function hideLoadingMessage()
        {
            xajax.$('__AjaxCall_Wait').style.display = 'none';
        }
        xajax.doneLoadingFunction = hideLoadingMessage;