How to add more Css properties in this Javascript : Javascript experts

can anyone tell me how to add or assign more properties to this given javascript.

    $('#mydoom').each(function () {
        if ($(this).css('visibility') == 'hidden') {
            document.location.href = "http://www.example.com";
        }
    });

you see the above script has only one css tag/property **visibility:hidden**, how can i add more properties... 

some like thats; **example**: 

    $('#mydoom').each(function () {
        if ($(this).css('visibility') == 'hidden')
         ($(this).css('display') == 'none')
         ($(this).css('font-size') == '25px')
         ($(this).css('color') == 'red')
     {
            document.location.href = "http://www.example.com";
        }
    });


You see the above scripts holds many properties...so how can i do that, this is not working which i show you above as example.