$( '#store-name' ).on( 'keyup', function( event ) {

		var	toConvert   = $( this ).val(),
			converted   = toConvert.replace( /\s+/g, '-' ).toLowerCase(),
			description = $( this ).next( '.form-text' );

		description.text( 'e.g. ' + converted + '.sellbird.com' );

	} );