Autocomplete drop-down positioned out of view in IE

The plugin was working fine in Chrome and Firefox, but in Internet Exploder the left edge of the drop-down menu that appears when you start typing in the autocomplete field begins at the right edge of the input field, making it unusable. See attached image. I tested this with multiple themes in Drupal 6.x including the Zen starter theme.

Commenting out "float:left;" in linkit.css (as show below) results in the drop-down being positioned correctly in all 3 browsers. There may be a better method of fixing this, but for now this resolves the issue so I can use the module with IE.

input#edit-link.with_imce {
/* float:left; */
margin-right:10px;
width:75%;
}