function doClick(buttonName,e)     {
        var key;

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

        if (key == 13) {
            //Get the button the user wants to have clicked
            var btn = document.getElementById(buttonName);
            if (btn != null) { //If we find the button click it
                btn.click();
                //alert( buttonName );
                event.keyCode = 0
            }
        }
   }