function captureEvent() {
    var elem = document.getElementById("Head_sid")
    if(event.keyCode==13) {
        if(elem.focused) {
            document.getElementById('Head_sbtn').click(); 
            return false;
        }else{
            return false;
       }
    }
}

function FSearch() {
    var s = document.getElementById("Head_sid").value
    if(s != "") {
        return true;
    }else{
        return false;
    }
}

addLoadEvent(function() {
   var elem = document.getElementById("Head_sid")
   elem.focused = false;
   elem.hasFocus = function() {
      return this.focused;
   };
   elem.onfocus=function() {
      this.focused=true;
   };
   elem.onblur=function() {
      this.focused=false;
   }
});