Readmore Functions

echo '<script>
$(document).ready(function(){
    var maxLength = 500;
    $(".show-read-more").each(function(){
        var myStr = $(this).html();
        if($.trim(myStr).length > maxLength){
            var newStr = myStr.substring(0, maxLength);
            var removedStr = myStr.substring(maxLength, $.trim(myStr).length);
            $(this).empty().html(newStr);
            $(this).append(\'<a href="javascript:void(0);" class="read-more"><br><div align="center"><b>...continue reading...</b></div></a>\');
            $(this).append(\'<span class="more-html">\'+removedStr+\'</span>\');
        }
    });
    $(".read-more").click(function(){
        $(this).siblings(".more-html").contents().unwrap();
        $(this).remove();
    });
});
</script>\n';

.show-read-more .more-html {
        display: none;
}

<p class='show-read-more'>$body</p>