absolute path required for border-image

just a head's up to anyone looking to add image-border support via a custom theme's css file... it requires an absolute path to the image, or else CSS3 PIE can't find it.

for example:

.selector img {
  -moz-border-image:    url("../images/border.jpg") 10 10 10 10;
  -webkit-border-image: url("../images/border.jpg") 10 10 10 10;
  -o-border-image:      url("../images/border.jpg") 10 10 10 10;
  border-image:         url("/sites/all/themes/yourthemename/images/border.jpg") 10 10 10 10; /* add absolute path so CSS3 PIE can find it */
  border-width: 10px;
}