function EnterKeyPressed(e){
        var key;
        if(window.event)
                key=window.event.keyCode;
        else
                key=e.which;
        if(key==13)
                this.form.submit();
}

function disableEnterKey(e){
     var key;
     if(window.event)       
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

     if(key == 13)
          return false;
     else  
          return true;
}