var g_omWindow;

function openWindow(p_strURL, p_iWidth, p_iHeight) {

    if(!p_iWidth)  p_iWidth     = 800;
    if(!p_iHeight) p_iHeight    = 550;

    if(!g_omWindow || g_omWindow.closed) {
        g_omWindow               = window.open(p_strURL, "g_omWindow", "status, scrollbars, resizable, width=" + p_iWidth + ", height=" + p_iHeight);
        if(!g_omWindow.opener) {
            g_omWindow.opener    = window;
        }
    }
    else {
        g_omWindow.location.href = p_strURL;
        g_omWindow.focus();
    }
}