function showMysearch(){
// document.getElementById('mysearch').style.display=(document.getElementById('mysearch').style.display != 'block' ? 'block' : 'none');
       var agt = navigator.userAgent.toLowerCase();
       var is_bsd   = (agt.indexOf("bsd") != -1);
       var is_x11   = (agt.indexOf("x11") != -1);
       var is_linux = (agt.indexOf("linux") != -1);
       var is_mac   = (agt.indexOf("mac") != -1);
       obj = document.getElementById('mysearch').style;
       if ( is_bsd || is_x11 || is_linux || is_mac ) {
             obj.top = '70px';
       }
       obj.display = (obj.display != 'block' ? 'block' : 'none');
}