function launchPubmed(arg){
    if( !pm ){
        var pm = null;
    }
    stuff='width=800,height=400,resizable=yes,scrollbars=yes,toolbar=yes,location=yes,directories=no,status=no,menubar=no';
    if( pm == null ){
        pm = window.open('http://www.bindingMOAD.org/xhtml/pubmed.html?'+arg,'pubmed',stuff);
    }
    pm.focus();
}