Setting PRE tab width in different web browsers

There's a way to set PRE tab width in Firefox and Opera, but there isn't a well-known way to do this in IE or Chrome, and hard-tabbed code in PRE tags suffers as a result.

pre {
    white-space: -moz-pre-wrap;
    white-space: -pre-wrap;
    white-space: -o-pre-wrap;
    white-space: pre-wrap;
    word-wrap: break-word;
    -moz-tab-size: 1.5em;
    -o-tab-size: 1.5em;

    margin: 1em 0 0 0;
    padding: 1em 1em 1em 1em;
    width: 65%;
}