/* ===========================================================================================
Mixins
============================================================================================== */

.box-shadow(@shadowsize: 5px, @color:rgba(0,0,0,.25), @left: 0px, @top: 1px) {
  	-moz-box-shadow: @left @top @shadowsize @color;
	-webkit-box-shadow: @left @top @shadowsize @color;
	box-shadow: @left @top @shadowsize @color;
}
.border-radius(@radius: 5px) {
  -moz-border-radius: @radius;
  -webkit-border-radius: @radius;
  border-radius: @radius;
}
.kill-background-image() {
  background-image: none;
  -ms-filter: none;
  filter: none;
}
.kill-box-shadow() {
  box-shadow: none;
  -webkit-box-shadow: none;
  -moz-box-shadow: none;
}
.sans-serif(@weight: normal, @size: 14px, @lineheight: 20px) {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: @size;
  font-weight: @weight;
  line-height: @lineheight;
}
.opacity(@opacity: 0.5) {
  -moz-opacity: @opacity;
  -khtml-opacity: @opacity;
  -webkit-opacity: @opacity;
  opacity: @opacity;
  @opperc: @opacity * 100;
  -ms-filter: ~"progid:DXImageTransform.Microsoft.Alpha(opacity=@{opperc})";
  filter: ~"alpha(opacity=@{opperc})";
}