Note: After saving, you may have to bypass your browser's cache to see the changes.
$("#mw-content-text h3").each(function(){ $(this).wrap("<div class=example></div>"); var ex_div=$(this).closest("DIV"); //ex_div.css("border","1px solid red"); //console.log(ex_div); while(ex_div.next().length && !ex_div.next().prop("tagName").match(/h3|h2|div/i)){ nextobj=ex_div.next(); //console.log(nextobj.prop("tagName")); ex_div.append(nextobj); } }); $("div.example").each(function(){ var video=$("iframe,object",this); if(video.length){ //console.log(video.eq(0),video.eq(0).prop("clientWidth")); if(video.eq(0).prop("clientWidth")<=300){ video.insertAfter($("h3",this)); $(this).css("width",300).css("float","left").css("margin","0 30px 0 0"); //console.log($(this).next().prop("className")); if($(this).next().prop("className")!="example") $(this).after("<br clear=both>"); }else { $(this).before("<br clear=both>"); } } });