var oWindow;

function openWindow(p_strURL, p_iWidth, p_iHeight) {

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

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