(function($) {
    $( document ).ready( function() {

        var scrs = [
            [0 , 620 , 'dm1.ru'] ,
            [621 , 1024, 'dm2.ru'] ,
            [1025, 2048, 'dm3.ru'] ,
            [2049, -1, 'dm4.ru']
        ];

        function redirect( nw , rp ) {
            if ( rp ) window.location.replace( nw );
            else window.location.href( nw );
        }

        function replace_domen( new_domen , protocol ) {
            if ( !protocol )
                protocol = window.location.protocol;
            var hostname = window.location.hostname;
            var link = window.location.href;
            var dpos = link.indexOf( hostname );
            if ( ( dpos == -1 ) || ( !hostname.length ) )
                return protocol + '//' + new_domen;
            return protocol + '//' + new_domen + link.substr( dpos + hostname.length );
        }

        function try_width( scrs , params ) {
            if ( !params ) params = {};
            if (params.hide_history===undefined) params.hide_history = true;

            var w = $( document ).width();

            for( var i in scrs ) {
                var item = scrs[i];

                if ( ( (item[0]==-1) || (w >= item[0]) ) &&
                    ( (item[1]==-1) || (w <= item[1]) ) ) {
                    redirect(
                        replace_domen( item[2] , params.protocol ) ,
                        params.hide_history
                    );
                    return true;
                }
            }
            return false;
        }

        try_width( scrs );

    } );
})( jQuery );