One of my clients asked me to make a blinking effect on a div. I think that might not be the best thing for him, maybe light fading in and out of opacity will get the attention of his customers, without annoying them. 

I currently have

```
 <a class="special_button" href="#">Special Offers &rsaquo;</a>

```

I have the following code for another div, which causes a fade in on browser load : 

```
$('.logo-top').delay(700).animate({
     'opacity' : '1',        
     'top' : '+=40px'
}, { duration: 700, easing: 'swing' });

```

How would I do something similar for the special\_button, but instead looping the opacity? From say 80 to 100?

It would even be better if it looped a certain amount of times, maybe like 5. 

Best,
Stepan