JavaScript: How to do something every full hour?

I want to execute some JS code every hour. But I can't use

setInterval("javascript function",60*60*1000);

because I want to do it every full hour, I mean in 1:00, in 2:00, in 3:00 and so on. I am thinking about something like

var d;
while(true) {
  d = new Date();
  if ((d.getMinutes() == '00') && (d.getSeconds() == '00')){
    // my code here
  }  
}

but it's too slow and it doesn't work well.

Thak you for any ideas