/* Prefix properties and values 
---------------------------------------- */

$default-prefixes: -webkit, -moz, -o, -khtml, -ms;

@mixin prefix($property, $value, $prefixes: $default-prefixes) {
	
	// Unquote the values
	$property : unquote($property);
	$value    : unquote($value);
	
	// Loop through the prefixes given
	@each $prefix in $prefixes {
		#{$prefix}-#{$property}:$value;
	}
}

@mixin prefix-value($property, $value, $prefixes: $default-prefixes) {
	
	// Unquote the values
	$property : unquote($property);
	$value    : unquote($value);
	
	// Loop through the prefixes given
	@each $prefix in $prefixes {
		#{$property}:#{$prefix}-#{$value};
	}
}

/**
 * Allows you to import a file only once
 * @param $name string File to import
*/
$imported-once-files: ();
@function import-once($name) {
    @if index($imported-once-files, $name) {
        @return false;
    }
    $imported-once-files: append($imported-once-files, $name);
    @return true;
}