var d, br_dom, br_ie, br_ie4, br_ie5x, br_moz,br_op;
d = document;
nua = navigator.userAgent;
if (!d.layers){
br_dom = (d.getElementById);
br_op = (nua.indexOf('Opera')!= -1);
br_konq = ( nua.indexOf( 'Konqueror' ) != -1 );
br_saf = ( nua.indexOf( 'Safari' ) != -1 );
br_moz = ( nua.indexOf( 'Gecko' ) != -1 && !br_saf && !br_konq);
br_ie = ( d.all && !br_op );
br_ie4 = ( br_ie && !br_dom );
br_ie5x = ( d.all && br_dom );
}