<?php
/* Sanitization Functions Common to Multiple Settings go Here, Specific Sanitization Functions are defined along with add_setting() */
	function fifteen_sanitize_checkbox( $input ) {
	    if ( $input == 1 ) {
	        return 1;
	    } else {
	        return '';
	    }
	}
	
	function fifteen_sanitize_positive_number( $input ) {
		if ( ($input >= 0) && is_numeric($input) )
			return $input;
		else
			return '';
	}
	
	function fifteen_sanitize_category( $input ) {
		if ( term_exists(get_cat_name( $input ), 'category') )
			return $input;
		else 
			return '';
	}