You should add a class to every simbol* element, then you would be able to bind handler to future elements by adding selector.
$(document).on('click', '.simbol', function() { ... });
To correctly grow/shrink elements, (IMHO) it should look something like this:
$('.simbol').not(e.target).animate({width:'360px'}, 500);//shrink all except the clicked one
$(e.target).animate({width:'400px'}, 500); //grow the clicked one
However it would be better to do this with CSS3:
//jQuery
$('.simbol').removeClass('grow');
$(e.target).addClass('grow');
/* CSS3 */
.simbol { width: 360px; transition: width 0.5s;}
.simbol.grow { width: 400px; }