Here are some exemple functions which help getting cross-browser definition :
$border-radius: $(radius) {
$radius = $radius == NULL ? '1em' : $radius;
$->set('border-radius', $radius);
$->set('-moz-border-radius', $radius);
$->set('-khtml-border-radius', $radius);
$->set('-webkit-border-radius', $radius);
$}
$box-shadow: $(shadow) {
$properties = array(
'box-shadow',
'-o-box-shadow',
'-moz-box-shadow',
'-khtml-box-shadow',
'-webkit-box-shadow'
);
$shadow = $shadow == NULL ? '0 1px 2px #000' : $shadow;
foreach($properties as $property) {
$->set($property, $shadow);
}
$}
$add-box-shadow: $(shadow) {
$properties = array(
'box-shadow',
'-o-box-shadow',
'-moz-box-shadow',
'-khtml-box-shadow',
'-webkit-box-shadow'
);
$shadow = $shadow == NULL ? '0 1px 2px #000' : $shadow;
foreach($properties as $property) {
$->push($property, $shadow);
}
$}
$inline-block: $(radius) {
$->set('+display', '-moz-inline-stack');
$->set('display', 'inline-block');
$->set('_display', 'inline');
$->set('_zoom', '1');
$}
$rotate: $(rotation) {
$rotation = $rotation == NULL ? '-22deg' : $rotation;
$->set('rotate', $rotation);
$->set('-o-rotate', $rotation);
$->set('-moz-rotate', $rotation);
$->set('-khtml-rotate', $rotation);
$->set('-webkit-rotate', $rotation);
$}
$vertical-gradient: $(top, bottom) {
$top = $top == NULL ? '#FFF' : $top;
$bottom = $bottom == NULL ? '#000' : $bottom;
$->set('background-image', '-moz-linear-gradient(top, '.$top.', '.$bottom.')');
$->set('background-image', '-webkit-gradient(linear,left top,left bottom,color-stop(0, '.$top.'),color-stop(1, '.$bottom.'))');
$->set('filter', 'progid:DXImageTransform.Microsoft.gradient(startColorStr='.$top.', EndColorStr='.$bottom.')');
$->set('-ms-filter', 'progid:DXImageTransform.Microsoft.gradient(startColorStr='.$top.', EndColorStr='.$bottom.')');
$}