Sass-mixin for box-shadow with optional inset and oldIE-output for outset version

SassMeister-input.scss

// ----
// Sass (v3.2.14)
// Compass (v0.12.2)
// ----

@mixin box-s($x, $y, $offset, $color, $inset: false) {
    $ie-color: ie-hex-str($color);

  @if $inset {
	    -webkit-box-shadow: inset $x $y $offset $color;
			    box-shadow: inset $x $y $offset $color;			
	} @else {
	    -webkit-box-shadow: $x $y $offset $color;
			    box-shadow: $x $y $offset $color;	
		filter: progid:DXImageTransform.Microsoft.dropshadow(OffX=#{$x}, OffY=#{$y}, Color='#{$ie-color}');				
	}
}

.test {
    @include box-s(1px,1px,5px, rgba(0,0,0,0.5));
}

.test-inset {
    @include box-s(1px,1px,5px, rgba(0,0,0,0.5), inset);
}

SassMeister-output.css

.test {
  -webkit-box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.5);
  box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.5);
  filter: progid:DXImageTransform.Microsoft.dropshadow(OffX=1px, OffY=1px, Color='#80000000');
}

.test-inset {
  -webkit-box-shadow: inset 1px 1px 5px rgba(0, 0, 0, 0.5);
  box-shadow: inset 1px 1px 5px rgba(0, 0, 0, 0.5);
}