levito

/**
 * Switch-style checkboxes.
 * Inspired by Espresso’s “Tools” switch
 */

input[type="checkbox"]:not(:checked), 
input[type="checkbox"]:checked { /* :checked here acting as a filter for older browsers */
	position: absolute;
	opacity: 0;
}

levito

// Detects whether or not a given CSS selector is supported by the current
// browser.
//
//        Takes:
//            selector (String)     The CSS selector to test.
//        Returns:
//            (Boolean)             true if the selector is supported, false
//                                  otherwise.
var supportsSelector = (function () {