var bb_t = 0;
$( document ).ready( function() { 
  bb_t = setTimeout("jsBannerDown()", 2000 );
});

function jsBannerDown(){
	$( '#jsbanner' ).css({ background:"white url(../images/jsbanner_majus.jpg) no-repeat center top", margin:"40px 0 0 0", height:"0", display:"block" });
	$( '#jsbanner' ).animate( {"height":"330px"}, { "duration": "slow" } );
}