dirty script to filter out hkoi result, need jquery

hkoi.js

// run in chrome developer console
var tables = $(".main table");
var TD = '<td style="width:40px; text-align:center">';

function fill_rank(st, ed){
	var rank = 1;
	for(var i=st; i<ed; i++){
		$(tables[i]).find("tr").each(function(){
			var row = $(this);
			var td = $(row.find("td")[1]);
			if (td.text().indexOf("香港培正中學")>0){
				row.addClass("pcms");
			}
			row.prepend(TD+rank+'</td>');
			rank++;
		});
		$(tables[i]).addClass("x");
	}
}
fill_rank(0,3);
fill_rank(3,6);

$(".main table.x tr").hide();
$(".main table.x tr.pcms").show();

$(".main h3").width(400);

jquerify-bookmarklet

javascript:(function ()%7B%0A  if(window.jQuery)%7B%0A%0A  %7Delse%7B%0A    var script = document.createElement("script");%0A    script.src = "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js";%0A    document.head.appendChild(script);%0A    %0A  %7D%0A  %0A%7D())