/**

     * Function to check css3 support

     * @param  {String}  declaration name

     * @return {Boolean}

     */

    function isCssSupported(declaration) {

        var supported = false,

            prefixes = 'Khtml ms O Moz Webkit'.split(' '),

            clone = document.createElement('div'),

            declarationCapital = null;

        declaration = declaration.toLowerCase();

        if (clone.style[declaration] !== undefined) supported = true;

        if (supported === false) {

            declarationCapital = declaration.charAt(0).toUpperCase() + declaration.substr(1);

            for( var i = 0; i < prefixes.length; i++ ) {

                if( clone.style[prefixes[i] + declarationCapital ] !== undefined ) {

                    supported = true;

                    break;

                }

            }

        }

        if (window.opera) {

            if (window.opera.version() < 13) supported = false;

        }

        return supported;

    }