What does a star-preceded property mean in CSS?

Question

I was looking at a css file today and found the following rule set:

div.with-some-class {
    display:block;                   
    margin:0;
    padding:2px 0 0 0;
    *padding:1px 0 0 0;
    font-size:11px;   
    font-weight:normal;
    *line-height:13px;
    color:#3D9AD0;
}

What does the star mean in *padding and *line-height?

Thanks.

Answer 1

This is the "star property hack" along the same lines as the "underscore hack." It includes junk before the property that IE ignores (the * works up to IE 7, the _ up to IE 6).