function window_opener(url, width, height) {
   height = height ? height : 550;
   width = width ? width : 600;
   window.open(url,'_blank','alwaysRaised=yes,dependent=yes,height='+height+',width='+width+',menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no');
   return false;
}


function trim(str) {
     s = str.replace(/^(\s)*/, '');
     s = s.replace(/(\s)*$/, '');
     return s;
}