function show()
     { 
      var myWidth = 0;
     if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth; 
    } else if( document.documentElement && ( document.documentElement.clientWidth ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth; 
    } else if( document.body && ( document.body.clientWidth  ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth; 
     }
    
    if(myWidth<=900)
    {
       if( typeof( window.innerWidth ) == 'number' ) {
            myWidth= 380;}
         else
          {myWidth= 374;}
    }
    else
     {
     myWidth=(((myWidth-900)/2)+373) 
    }
     if( typeof( window.innerWidth ) == 'number' ) {
    
    myWidth = myWidth-8; 
    } 
    
     document.getElementById("tmenu").style.left=myWidth+ "px";
      document.getElementById("tmenu").style.visibility="visible";
        
     }
      function hide()
     { 
      document.getElementById("tmenu").style.visibility="hidden";
        
     }