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enzymes (AHL) </a></li><li><a href="../../page/19347/nucleic-acids-.html">Nucleic acids </a></li><li><a href="../../page/19361/biological-pigments-.html">Biological pigments </a></li><li><a href="../../page/19366/stereochemistry-in-biomolecules.html">Stereochemistry in biomolecules</a></li></ul></li><li><a href="../../page/19390/option-c-.html" class="father">Option C </a><ul class="level-2"><li><a href="../../page/19391/energy-sources.html">Energy sources</a></li><li><a href="../../page/19407/fossil-fuels.html">Fossil fuels</a></li><li><a href="../../page/19411/nuclear-fusion-nuclear-fission-reactions.html">Nuclear fusion & nuclear fission reactions</a></li><li><a href="../../page/19429/solar-energy.html">Solar energy</a></li><li><a href="../../page/19437/environmental-impact-global-warming.html">Environmental impact - global warming</a></li><li><a href="../../page/19453/electrochemistry-rechargeable-batteries-fuel-cells.html">Electrochemistry, rechargeable batteries & fuel 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auxiliary case study</a></li><li><a href="../../page/19258/nuclear-medicine-.html">Nuclear medicine </a></li><li><a href="../../page/19273/drug-detection-analysis-.html">Drug detection & analysis </a></li></ul></li></ul></li><li><a href="../../page/16592/practical-scheme-of-work-ia-.html">Practical scheme of work & IA </a><ul class="level-1"><li><a href="../../page/16682/internal-assessment.html" class="father">Internal Assessment</a><ul class="level-2"><li><a href="../../page/18892/scaffolding-the-investigation.html">'Scaffolding' the investigation</a></li><li><a href="../../page/18896/timing-organisation-.html">Timing & organisation </a></li><li><a href="../../page/18905/choosing-the-research-question.html">Choosing the research question</a></li><li><a href="../../page/18946/personal-engagement.html">Personal engagement</a></li><li><a href="../../page/18950/exploration.html">Exploration</a></li><li><a href="../../page/18957/analysis.html">Analysis</a></li><li><a href="../../page/18965/evaluation.html">Evaluation</a></li><li><a href="../../page/18966/communication.html">Communication</a></li><li><a href="../../page/19882/internal-standardization-of-the-ia.html">Internal standardization of the IA</a></li><li><a href="../../page/19901/submitting-the-samples-for-moderation.html">Submitting the samples for moderation</a></li><li><a href="../../page/33754/ten-suggestions-for-ias-using-secondary-data.html">Ten suggestions for IAs using secondary data</a></li><li><a href="../../page/37544/gaining-full-marks-for-a-databased-ia-.html">Gaining full marks for a databased IA </a></li><li><a href="../../page/19506/ia-example-marking-exercise-.html">IA example & marking exercise </a></li><li><a href="../../page/23929/genuine-examples-of-moderated-ia-reports.html">Genuine examples of moderated IA reports</a></li><li><a href="../../page/25234/examples-of-teacher-marked-ia-reports-.html">Examples of teacher-marked IA reports </a></li><li><a href="../../page/37542/history-of-internal-assessment.html">History of Internal Assessment</a></li></ul></li><li><a href="../../page/16598/mandatory-laboratory-components.html" class="father">Mandatory laboratory components</a><ul class="level-2"><li><a href="../../page/16613/formula-of-magnesium-oxide-.html">Formula of magnesium oxide </a></li><li><a href="../../page/16612/determining-the-mr-of-an-unknown-gas.html">Determining the <i>M</i><sub>r</sub> of an unknown gas</a></li><li><a href="../../page/16615/acid-base-titrations-.html">Acid-base titrations </a></li><li><a href="../../page/16616/a-green-acid-base-practical.html">A green acid-base practical</a></li><li><a href="../../page/16617/analysis-of-aspirin-tablets.html">Analysis of aspirin tablets</a></li><li><a href="../../page/16618/caco3-in-egg-shells.html">CaCO<sub>3</sub> in egg shells</a></li><li><a href="../../page/16644/enthalpy-changes.html">Enthalpy changes</a></li><li><a href="../../page/16631/reaction-rates.html">Reaction rates</a></li><li><a href="../../page/16635/rate-dependent-factors.html">Rate-dependent factors</a></li><li><a href="../../page/16636/determining-ea-for-a-reaction.html">Determining <i>E</i><sub>a</sub> for a reaction</a></li><li><a href="../../page/16637/iodination-of-propanone.html">Iodination of propanone</a></li><li><a href="../../page/18144/titrations-with-a-ph-meter.html">Titrations with a pH meter</a></li><li><a href="../../page/18355/redox-titration-with-kmno4-.html">Redox titration with KMnO<sub>4</sub> </a></li><li><a href="../../page/16640/voltaic-cells.html">Voltaic cells</a></li><li><a href="../../page/16659/3-d-molecular-modelling-.html">3-D molecular modelling </a></li></ul></li><li><a href="../../page/17168/other-good-practicals.html" class="father">Other good practicals</a><ul class="level-2"><li><a href="../../page/17196/common-chemical-reactions.html">Common chemical reactions</a></li><li><a href="../../page/227/elements-oxides-of-the-third-period-.html">Elements & oxides of the third period </a></li><li><a href="../../page/17239/the-halogens.html">The halogens</a></li><li><a href="../../page/17162/boiling-points-of-mixtures.html">Boiling points of mixtures</a></li><li><a href="../../page/17170/polarity-of-molecules.html">Polarity of molecules</a></li><li><a href="../../page/18083/le-chateliers-principle-.html">Le Chatelier's principle </a></li><li><a href="../../page/19582/determining-kc-for-an-esterification-reaction.html">Determining <i>K</i><sub>c</sub> for an esterification reaction</a></li><li><a href="../../page/18164/redox-reactions-of-vanadium-.html">Redox reactions of vanadium </a></li><li><a href="../../page/18351/chlorine-in-swimming-pools-.html">Chlorine in swimming pools </a></li><li><a href="../../page/18178/analysis-of-cuii-ions-in-solution-.html">Analysis of Cu(II) ions in solution </a></li><li><a href="../../page/18179/percentage-of-copper-in-brass.html">Percentage of copper in brass</a></li><li><a href="../../page/18356/electrolytic-cells-.html">Electrolytic cells </a></li><li><a href="../../page/18598/reactions-of-organic-compounds.html">Reactions of organic compounds</a></li><li><a href="../../page/18752/hydrolysis-of-halogenoalkanes.html">Hydrolysis of halogenoalkanes</a></li><li><a href="../../page/18784/preparation-of-13-dinitrobenzene-.html">Preparation of 1,3-dinitrobenzene </a></li><li><a href="../../page/19022/determination-of-an-organic-structure.html">Determination of an organic structure</a></li><li><a href="../../page/19887/preparation-of-nylon-66.html">Preparation of nylon 6,6</a></li><li><a href="../../page/19343/determination-of-vitamin-c-content-.html">Determination of vitamin C content </a></li><li><a href="../../page/19342/hydrolysis-of-starch-.html">Hydrolysis of starch </a></li><li><a href="../../page/19159/preparation-purification-of-aspirin-.html">Preparation & purification of aspirin </a></li></ul></li><li><a href="../../page/18851/ict-in-practical-work.html" class="father">ICT in practical work</a><ul class="level-2"><li><a href="../../page/18852/data-logging-.html">Data logging </a></li><li><a href="../../page/18853/software-for-graph-plotting-.html">Software for graph plotting </a></li><li><a href="../../page/18854/spreadsheets-for-data-processing-.html">Spreadsheets for data processing </a></li><li><a href="../../page/18855/databases.html">Databases</a></li><li><a href="../../page/18856/computer-modelling-simulations-.html">Computer modelling & simulations </a></li></ul></li><li><a href="../../page/16594/group-4-project.html" class="father">Group 4 Project</a><ul class="level-2"><li><a href="../../page/16595/practicalities.html">Practicalities</a></li><li><a href="../../page/16596/reflective-statement-.html">Reflective statement </a></li></ul></li><li><a 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</a></li><li><a href="../../page/17787/hl-questions-on-each-sub-topic-.html">HL Questions on each sub-topic </a></li><li><a href="../../page/20428/hl-paper-3-section-a-questions.html">HL Paper 3 Section A questions</a></li><li><a href="../../page/17793/hl-questions-on-the-options.html">HL Questions on the options</a></li><li><a href="../../page/24973/hl-quizzes-on-option-sub-topics.html">HL Quizzes on option sub-topics</a></li><li><a href="../../page/41573/printable-versions-of-written-tasks-.html">Printable versions of written tasks </a></li></ul></li><li><a href="../../page/41465/complete-course-for-students-.html">Complete course for students </a><ul class="level-1"><li><a href="../../page/27988/full-coverage-of-each-topic-and-sub-topic.html" class="father">Full coverage of each topic and sub-topic</a><ul class="level-2"><li><a href="../../page/27959/topic-1-stoichiometric-relationships.html">Topic 1 : Stoichiometric relationships</a></li><li><a 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<h1 class="section-title">What home schooling is showing</h1>
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Monday 22 February 2021
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<div style="padding: 0 30px;"><p style="text-align: center;"><img alt="" class="noborder" src="../../../ib/chemistry/images/2014-blog/home-schooling-1.png" style="width: 500px; height: 331px;"></p><hr class="hidden"><p>Good parents will ask their children what they have been doing in school and help them with homework etc. etc. However until now most parents will not have looked in detail at what their children are studying in each of their subjects. Since parents have had to take on the role of teacher, home schooling has changed all this. Some parents are now seriously questioning the curriculum. In <a href="https://www.theguardian.com/education/2021/feb/20/im-a-maths-lecturer-and-i-had-to-get-my-children-to-teach-me">a recent article in the Guardian</a> (a UK newspaper) a well-known novelist is appalled at the way in which her 7 year old daughter is being taught English.</p><hr class="hidden"><p><img alt="" class="noborder" src="../../../ib/chemistry/images/2014-blog/erin-kelly.png" style="width: 671px; height: 332px;"></p><hr class="hidden"><p>Erin Kelly goes on to say that she does not blame the teacher, who she says is doing her best to make the lessons as interesting as possible. What she blames is the curriculum that the teacher is being required to follow. This site is of course for IB chemistry teachers, but isn’t the IB doing exactly this too when it comes to the IA in chemistry? The whole emphasis is currently put on students being required to show that they can identify different types of variables, number crunch uncertainties and pass through unnecessary hoops with little credit awarded to students who show real initiative and imagination. You can read about this in much greater detail on my page on <a href="../../page/37544/gaining-full-marks-for-a-databased-ia-.html" title="Practical scheme of work & IA » Internal Assessment » Gaining full marks for a databased IA ">Gaining full marks for a databased IA</a>.</p></div>
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Please enable cookies to log in.</div><div class="alert alert-info"><i class="fa fa-question-circle"></i> Enabling cookies in <a target="_blank" style="margin: 0; padding: 0;" href="https://support.mozilla.org/en-US/kb/enable-and-disable-cookies-website-preferences">Firefox</a>, <a target="_blank" style="margin: 0; padding: 0;" href="https://support.google.com/accounts/answer/61416?hl=en">Chrome</a>, <a target="_blank" style="margin: 0; padding: 0;" href="http://windows.microsoft.com/en-us/windows-vista/block-or-allow-cookies">Explorer</a></div>';$("#modal-login .modal-header").append(msg)}if($(".panel-expandable > .panel-heading").click((function(e){e.preventDefault();var panel=$(this).closest(".panel-expandable"),expandables=panel.hasClass("panel-has-footer")?".panel-body, .panel-footer":".panel-body";panel.find(".panel-body").is(":visible")?(panel.find(expandables).slideUp("fast"),panel.find(".expander > .fa-minus").removeClass("fa-minus").addClass("fa-plus")):(panel.find(expandables).slideDown("fast"),panel.find(".expander > .fa-plus").removeClass("fa-plus").addClass("fa-minus"))})),$("#modal-find-out-more").css({width:.8*$("#container").width()+"px","margin-left":-.4*$("#container").width()+"px"}),$(".modal-xxl").length){var modalTopPos=Math.round(.07*$(window).height());$(window).width()>1200&&$(".modal-xxl").css({"max-width":$(window).width()>960?"960px":$(window).width()+"px",width:$(window).width()>960?"960px":$(window).width()+"px","margin-left":$(window).width()>960?"-480px":Math.round($(window).width()/2)}),$(".modal-xxl").css("top",modalTopPos+"px"),$(".modal-xxl").on("shown",(function(){var mHeaderH=$(this).find(".modal-header").outerHeight(),mBody=$(this).find(".modal-body"),mBodyH=mBody.outerHeight(),mFooterH=$(this).find(".modal-footer").outerHeight(),bottomOfTheModal=modalTopPos+mHeaderH+mBodyH+mFooterH;if(bottomOfTheModal<$(window).height())mBodyH+=$(window).height()-bottomOfTheModal-60,mBody.css("max-height",mBodyH+"px");else{$(window).scrollTop(0),modalTopPos=10,$(".modal-xxl").css("top",modalTopPos+"px"),bottomOfTheModal=modalTopPos+mHeaderH+mBodyH+mFooterH,availableScroll=bottomOfTheModal-$(window).height()+modalTopPos;var lastPos=-1;$(window).on("scroll",(function(){var s=$(window).scrollTop()>availableScroll?availableScroll:$(window).scrollTop();newPos=modalTopPos-s,newPos!=lastPos&&($(".modal-xxl").css("top",newPos+"px"),lastPos=newPos)}))}}))}function popupHelp(url,title,w,h){var dualScreenLeft=void 0!==window.screenLeft?window.screenLeft:screen.left,dualScreenTop=void 0!==window.screenTop?window.screenTop:screen.top,width,height,left=(window.innerWidth?window.innerWidth:document.documentElement.clientWidth?document.documentElement.clientWidth:screen.width)/2-w/2+dualScreenLeft,top=(window.innerHeight?window.innerHeight:document.documentElement.clientHeight?document.documentElement.clientHeight:screen.height)/2-h/2+dualScreenTop,newWindow=window.open(url,title,"menubar=no,location=no,resizable=0, width="+w+", height="+h+", top="+top+", left="+left);return window.focus&&(newWindow?newWindow.focus():$('<div class="alert alert-warning" style="margin-bottom: 0px;"><p class="help-block">Pop Up blocked. Please allow Pop Ups in your browser settings.</p></div>').insertBefore("body")),newWindow}if($(".open-student-access-help").click((function(e){e.preventDefault();var h=$(window).height()-20,w=$(window).width()<1280?$(window).width():1280;popupHelp(helpURL,"Student Access Help",w,h)})),$(".pop-up-help").click((function(e){e.preventDefault();var url=$(this).attr("href"),title=$(this).data("title"),h=$(window).height()-20,w;popupHelp(url,title,$(window).width()<1280?$(window).width():1280,h)})),$("section.tib-hiddenbox").length){var count=0;$($("section.tib-hiddenbox").get().reverse()).each((function(){var box=$(this),revealButton;$("<a />").attr("class","btn showhider").attr("rel","hiddenBoxContent"+count).attr("style","margin-bottom: 0;").html('<i class="fa fa-eye"></i>').insertBefore(box);var newContainer=$("<div />").attr("class","hidden-content").attr("id","hiddenBoxContent"+count).html(box.html());newContainer.hide(),newContainer.insertBefore(box),box.remove(),count++})),$("a.showhider").on("click",(function(e){var container=$("#"+$(this).attr("rel"));container.is(":hidden")?(container.fadeIn("fast"),$(this).html('<i class="fa fa-eye-slash"></i>')):(container.fadeOut("fast"),$(this).html('<i class="fa fa-eye"></i>'))}))}
let commentEditor={};function initCommentsEditor(){const t=document.querySelector("#comment-content");t&&CKEDITOR.BasicEditor.create(t,{toolbar:{viewportTopOffset:50,items:["bold","italic","link","subscript","superscript"]},link:{decorators:{addLinkNoFollow:{mode:"automatic",callback:function(t){if(null!=t)return["http://","http://www","https://","https://www","ftp:"].some((o=>t.startsWith(o)))},attributes:{target:"_blank",class:"ck-link",rel:"nofollow"}}}}}).then((function(t){commentEditor=t,commentEditor.execute("heading",{value:"paragraph"})})).catch((function(t){console.error(t)}))}function replaceComment(content,commentId){$("#cancel-comment-post").trigger("click"),$("#comm-"+commentId+" > .comment-content div.comment-text").html(content)}function placeComment(html,fatherId){$("#comment-form").hide(),$("#comment-form textarea").val(""),fatherId>0?($("#comments #comm-"+fatherId).append(html),$("#comments").append($("#comment-form"))):$("#comments").append(html).append($("#comment-form")),$(".comment .fa-arrow-down").removeClass("fa-arrow-down").addClass("fa-reply"),$(".comment-content").removeClass("marked"),$("#comment-form").show("fast")}function update_sticky_comments(arrIds,mode){$.post("pages/edit/update-sticky-comments.php?mode="+mode,{ids:arrIds,ticket:$("#comment-ticket").val()},(function(data){1==data.success?("set"==data.mode&&$("#sticky-"+data.id).parents("div.comment").each((function(e){$(this).find("a.pull-right").first().addClass("sticky"),$(this).find("a.pull-right").first().attr("title","Unmark as important")})),"unset"==data.mode&&($("#sticky-"+data.id).removeClass("sticky"),$("#sticky-"+data.id).attr("title","Mark as important"),$("#sticky-"+data.id).closest("div.comment").find("div.comment").each((function(e){$(this).find("a.pull-right").first().removeClass("sticky"),$(this).find("a.pull-right").first().attr("title","Mark as important")})))):alert(data.error)}),"json")}"undefined"!=typeof CKEDITOR&&initCommentsEditor(),$("section#comments").on("click","#edit-comment",(function(e){e.preventDefault();var commentId=$("form#comment-form #comment-mode").val(),commentContent=commentEditor.getData(),ticket=$("#comment-ticket").val(),sectionId=$("#section-id").val();$.post("pages/comment.php",{action:"edit",comment_id:commentId,content:commentContent,ticket:ticket},(function(data){"0"==data.success?alert(data.error):replaceComment(data.text,commentId)}),"json")})),$("section#comments").on("click","a.edit-comment",(function(e){e.preventDefault(),$(".comment .hidden").removeClass("hidden");var commentId=$(this).data("comment-id"),form=$("form#comment-form"),text=$("#comm-"+commentId+" > .comment-content div.comment-text").html();commentEditor.setData(text),$("form#comment-form textarea").val(""),$("form#comment-form textarea").val(text),$("#comm-"+commentId+" > .comment-content > img").addClass("hidden"),$("#comm-"+commentId+" > .comment-content > div.comment-text").addClass("hidden"),$("#comm-"+commentId+" > .comment-footer").addClass("hidden"),$("#comm-"+commentId+" > .comment-content").append(form),$("form#comment-form #submit-comment").hide(),$("form#comment-form #edit-comment").show(),$("form#comment-form #cancel-comment-post").show(),$("form#comment-form #comment-mode").val(commentId),fancyScrollTo("comment-form"),$("form#comment-form textarea").focus()})),$("section#comments").on("click","#submit-comment",(function(e){e.preventDefault();var commentContent=commentEditor.getData(),fatherId=$("#father-comment").val(),ticket=$("#comment-ticket").val(),sectionId=$("#section-id").val();$.post("pages/comment.php",{action:"post",section_id:sectionId,father_id:fatherId,content:commentContent,ticket:ticket},(function(data){if("0"==data.success)alert(data.error);else{commentEditor.setData(""),placeComment(data.html,fatherId),$("form#comment-form #cancel-comment-post").hide();var n=0;$("#n-comments").text().length>0&&(n=parseInt($("#n-comments").text())),$("#n-comments").text(n+1)}}),"json")})),$("section#comments").on("click","a.reply-comment",(function(e){e.preventDefault(),$(".comment .fa-arrow-down").removeClass("fa-arrow-down").addClass("fa-reply"),$(".comment-content").removeClass("marked");var form=$("form#comment-form"),fatherId=$(this).parent().parent(".comment").attr("rel");form.find("#father-comment").val(fatherId),$(this).parent().parent(".comment").find("> .reply-area").append(form),$(this).find(".fa-reply").removeClass("fa-reply").addClass("fa-arrow-down"),$(this).parent().prev(".comment-content").addClass("marked"),$("form#comment-form #cancel-comment-post").show(),fancyScrollTo("comment-form"),$("form#comment-form textarea").focus()})),$("section#comments").on("click","#cancel-comment-post",(function(e){e.preventDefault(),$(".comment .hidden").removeClass("hidden"),$(".comment .fa-arrow-down").removeClass("fa-arrow-down").addClass("fa-reply"),$(".comment-content.marked").removeClass("marked"),commentEditor.setData("");var form=$("form#comment-form");$("section#comments").append(form),$("form#comment-form #father-comment").val("0"),$("form#comment-form textarea").val(""),$("form#comment-form #comment-mode").val("new"),$("#edit-comment").hide(),$(this).hide(),$("#submit-comment").show()})),$("section#comments").on("click","a.delete-comment",(function(e){var commentId=$(this).data("comment-id"),isFather=$("#comm-"+commentId).children(".comment").length>0,ticket=$("#comment-ticket").val(),msg="You are going to delete a comment.\n\nThis action cannot be undone.\n\nAre you sure?";isFather&&(msg="You are going to delete a comment and all its replies.\n\nThis action cannot be undone.\n\nAre you sure?"),confirm(msg)&&$.post("pages/comment.php",{action:"delete",comment_id:commentId,is_father:isFather,ticket:ticket},(function(data){if("0"==data.success)alert(data.error);else{$("#comm-"+commentId+".comment").replaceWith(data.text);var n=0;$("#n-comments").text().length&&(n=parseInt($("#n-comments").text())),$("#n-comments").text(n-parseInt(data.deleted))}}),"json"),e.preventDefault(),e.stopPropagation()})),$("section#comments").on("click","a.pull-right",(function(e){e.preventDefault();var arrayIds=[];$(this).hasClass("sticky")?(arrayIds.push($(this).closest("div.comment").attr("rel")),$(this).closest("div.comment").find("div.comment").each((function(e){arrayIds.push($(this).attr("rel"))})),update_sticky_comments(arrayIds,"unset")):($(this).parents("div.comment").each((function(e){arrayIds.push($(this).attr("rel"))})),update_sticky_comments(arrayIds,"set"))}));
$('.page-bookmarker').click(function(e){
e.preventDefault();
var pid = $(this).data('pid');
var random = $(this).data('ticket');
bookmarkPage(pid, random);
});
function bookmarkPage(pageId, random){
$.get(
'pages/bookmarks.php',
{
'id' : pageId,
'ticket' : random
},
function(data){
if(data['success'] == '1') {
var buttonTitle = 'Favourite';
if( $('.page-bookmarker').attr('title') == 'Favourite' ) {
buttonTitle = 'Unfavourite';
}
$('.page-bookmarker > i').toggleClass('colored');
$('.page-bookmarker.stacked > span').text(buttonTitle);
$('.page-bookmarker').attr('title', buttonTitle);
}
},
'json'
);
}
// the comment icon becomes a popover
$('img.ico[src="/img/icons/comments.png"]').each(function(){
var comment = $(this).attr('title');
$(this).removeAttr('title');
$(this).wrap('<a class="tib-popover" href="#" data-content="'+comment+'" data-togle="popover" data-placement="top" />');
});
$('img.ico[src="img/icons/comments.png"]').each(function(){
var comment = $(this).attr('title');
$(this).removeAttr('title');
$(this).wrap('<a class="tib-popover" href="#" data-content="'+comment+'" data-togle="popover" data-placement="top" />');
});
$('.tib-popover').popover({
html : true,
trigger : 'hover',
delay : {show: 300, hide: 300},
placement : function (context, source) {
var position = $(source).position();
if (position.top > 200) { return "top";}
if (position.left < 515) { return "right"; }
if (position.top < 200) { return "bottom";}
if (position.left > 515) { return "left"; }
return "top";
}
}).click(function(e){
e.preventDefault();
});
// LIVE CAROUSEL MANAGEMENT
// Miliseconds for the next slide
var carouselTime = 6500;
// Start carousels
$('div.carousel.slide').carousel({interval: carouselTime});
$('.tib-indicators > img').click(function(){
// IN
var index = $(this).index();
var container = $(this).closest('.carousel.slide');
container.carousel(index);
});
$('a.btn.showhider').click(function(e) {
var showHiderId = $( this ).attr('rel');
if ( $('#'+showHiderId).find('iframe').length > 0 ) {
$('#'+showHiderId+' iframe').each(function() {
if ( $(this).attr('src').indexOf('.pdf') > 0 ) {
this.contentWindow.location.reload(true);
}
});
}
});
var hTopmenu = $('#topmenu').height();
var n = 0;
$('nav.top-nav > ul > li').each(function(k, e) {
if (n > 1) {
var diff = hTopmenu-(e.offsetTop+e.offsetHeight);
$(e).find(' > ul ').css('margin-top', '-'+diff+'px');
}
n++;
});
});
</script>
</body>
</html>