Css bug with ie6

I have checked up as looks smile-box in different browsers..
in ie6 there is a problem, it is obvious with properties "width:auto" and "height:auto"

Problem can see on a screenshot

The given problem appear because of css properties

.smiley-class {
  cursor: pointer;
  height: auto;
  width: auto;
  border: 0;
}

if I remove:

height: auto;
width: auto;

ie6 displays smileys correctly.

I hope you change a css file in next module version.

And sorry for my English.