function setWidth() {
    var finalWidth = 0;
    var $collectionEl = $('.el');
    $collectionEl.each(function (indx, elem) {
        var elWidth = $(elem).width();
        if (elWidth > finalWidth) {
            finalWidth = elWidth;
        }
    });
    $collectionEl.css('min-width', finalWidth);
}

$(document).ready(function () {
   setWidth();
});

var resizeTimer;
$(window).resize(function () {
    clearTimeout(resizeTimer);
    resizeTimer = setTimeout(function() {
        setWidth();
    }, 250);
});