function showPromoPopup(obj) {
    if( typeof( window.innerWidth ) == 'number' ) {
        myHeight = window.innerHeight;
    } else if( document.documentElement && ( document.documentElement.clientHeight ) ) {
        //IE 6+ in 'standards compliant mode'
        myHeight = document.documentElement.clientHeight;
    } else if( document.body && ( document.body.clientHeight ) ) {
        //IE 4 compatible
        myHeight = document.body.clientHeight;
    }
    Modalbox.show(obj.href, {title: obj.title, closeString: 'Close', width: 950, height: (myHeight-50)});
    return false;
}