$(function () {
    $(".minheight1").each(function () {
        $(this).contents().wrapAll("<div class="box_inner"></div>");
    })
})
$(window).bind("resize", height_handler).bind("load", height_handler)

function height_handler() {
    //if (window.matchMedia("screen and (min-width: 768px)").matches) {
    if ($(window).width() &gt;= 752) {
        $(".minheight1").equalHeights()
    }
    else {
        $(".minheight1").css({
            'height': 'auto'
        });
    }
}
(function ($) {
    $.fn.equalHeights = function (minHeight, maxHeight) {
        tallest = (minHeight) ? minHeight : 0;
        this.each(function () {
            if ($("&gt;.box_inner", this).outerHeight() &gt;= tallest) {
                tallest = $("&gt;.box_inner", this).outerHeight();
            }
        });
        if ((maxHeight) &amp;&amp; tallest &gt; maxHeight) tallest = maxHeight;
        return this.each(function () {
            $(this).height(tallest);
        })
    }
})(jQuery)