jQuery(function(){    
    
    $('.news-block > iframe').width($('.grid_4').width()-20);
    $('.news-block > iframe').height((($('.grid_4').width()-20)/4)*3);    
    
    $(window).resize(function() {
        
        $('.news-block > iframe').width($('.grid_4').width()-20);
        $('.news-block > iframe').height((($('.grid_4').width()-20)/4)*3);        
    });
    
});