Jquery setInterval too fast when coming from another tab

I've got a site with endlessly sliding images using jquery's setIntervall() function.

When calling the page in Chrome 13 and I switch to another tab to come back a few seconds later the image sliding is happening faster, as if it tried to keep up to where it was if it hadn't switched to another tab.

How could I resolve this issue?

$(window).load(function() { 
    setInterval(nextSlide, 3500);
});

function nextSlide(){   
    offset += delta;
    $("#slideContent").animate({left: -1 * offset}, 1000);
}