javascript and postgres

Hello all.

My javascript connects with postgres using php.
php responds with XML for my select request.
I wonder is there any way to access to postgres directly?
I mean like this.

new PGSQL.Request (
'postgres.server.com'
,{
,port: 5432
,sql : 'select * from bra'
,asynchronous : true
,parameters : ''
,onComplete : fetch_function
,onLoaded : function(){
$( 'status' ).innerHTML="Loading...";
}
,onFailure : function(){
$( 'status' ).innerHTML= "error";
}
}
);

regards