/*  code xu ly nhan nut enter */
        var scontrol;
        var bco;
        function SetFocusbtn(scon){ 
            scontrol=scon;
            bco=1;
        }
        document.onkeydown=function(event) {
            evt=event || window.event;
            var key_enter=13;
            if (bco==1){
            if (key_enter==evt.keyCode) {
                if (eval("document.getElementById('" + scontrol + "')" !=null)) {
                    eval("document.getElementById('" + scontrol + "').focus();")
                    eval("document.getElementById('" + scontrol + "').click();")				
                } 
                evt.keyCode=0;
                bco=0;
              }               
            }
        }