Why does my bar graph run automatically when it's supposed to run only on mouseover?

I'm creating a bar graph for a project and want the bar to rise when the mouse hovers over it. Right now, the bar automatically rises when I run the project. I want it to rise ONLY when I mouseover it.

My mouseover code is:

$( "W" ).animate({

    left: "+=50",

  }, 5000, function() {

    // Animation complete.

  });

and my trigger code is:

var white = sym.$("W");

W.stop();