function dw_loadExternal(url, ifrmId, divId, bLoadMsg) {
    // defaults for iframe, display div
    ifrmId = ifrmId || 'buffer'; divId = divId || 'display'; 
    if ( window.frames[ifrmId] ) {
        // Could use location.replace method if you do not want back button to load previous iframe url 
        //window.frames[ifrmId].location.replace(url);
        window.frames[ifrmId].location = url;
        // If you want the whole page to scroll to the top when new content is loaded 
        //window.scrollTo(0,0);
        var lyr = document.getElementById? document.getElementById(divId): null;
        if ( lyr && bLoadMsg ) { // Option to display message while retrieving data 
            lyr.innerHTML = '<p>Retrieving data. Please wait ...</p>';
            lyr.style.display = 'block'; 
        }
        return false;
    } 
    return true;
}
function dw_displayExternal(ifrmId, divId, fp) {
    ifrmId = ifrmId || 'buffer'; divId = divId || 'display'; 
    
    var lyr = document.getElementById? document.getElementById(divId): null;
    if ( window.frames[ifrmId] && lyr ) {
        lyr.innerHTML = window.frames[ifrmId].document.body.innerHTML;
        lyr.style.display = 'block';
        if ( typeof fp == 'function' ) {
            fp();
        }
        if ( typeof window.frames[ifrmId].doOnIframedLoad == 'function' ) {
            window.frames[ifrmId].doOnIframedLoad();
        }
    }
}