Jquery focus out after pressing enter key

use the jquery blur() event

$('.summaryT').keypress(function(e){
    if(e.which == 13){
        callajax();
        $(this).blur();

    }
});

Try this

$('.summaryT').keypress(function(e){
    if(e.which == 13){
        callajax();
        $(this).blur();    
    }
});

Since AJAX stands for asynchronous, you may want to call focusout() after the call successfully finished.