Ett litet Greasemonkey skript som utökar Göteborgs Postens skolkarta så att den visar betyg med färger på kartmarkörerna. Skriptet kan enkelt göras om till en bookmarklet mha: http://ted.mielczarek.org/code/mozilla/bookmarklet.html

pimpa_gp_skolkarta.js

// ==UserScript==
// @name        Pimpa GP skolkarta
// @namespace   squeed.skolor
// @include     http://www.gp.se/nyheter/goteborg/goteborgsskolor/*
// @version     1
// ==/UserScript==


// Tip: To convert to bookmarklet use: http://ted.mielczarek.org/code/mozilla/bookmarklet.html
//      and just paste the whole file content.

function pimpGPsSkolKarta() {
    var icons = {
        "IG" : "http://www.google.com/intl/en_us/mapfiles/ms/icons/red-dot.png",
        "G" : "http://www.google.com/intl/en_us/mapfiles/ms/icons/yellow-dot.png",
        "VG" : "http://www.google.com/intl/en_us/mapfiles/ms/icons/blue-dot.png",
        "MVG" : "http://www.google.com/intl/en_us/mapfiles/ms/icons/green-dot.png"
    };

    // have to use the geo position to figure out what marker represents what school
    var geo_position_to_school_mapping = {};
    var markers = null;
    var schools = null;

    // start periodic check for when map is ready
    var timer_id_check_map_ready = setInterval(function() {
        waitForMapReady()
    }, 300);
    var waitForMapReady = function() {
        if (isMapReady()) {
            // turn off timer event
            clearInterval(timer_id_check_map_ready);
            parseSchools();
            updateMarkerIcons(markers);
        }

    };

    var isMapReady = function() {
        if (mktmp.spots_ready === 1 && !!mktmp.mgr && !!mktmp.mgr[0].markers) {
            markers = mktmp.mgr[0].markers;
            schools = mktmp.spots[0].spots;
            return markers.length === schools.length;
        }
    };

    var parseSchools = function() {
        for (var i = 0, j = schools.length; i < j; i++) {
            addGeoPosition2SchoolMapping(schools[i]);
        }
        var msg = "Pimpar skolkartan!";
        msg += "\n" + schools.length + " skolor\n";
        alert(msg);

    };

    var addGeoPosition2SchoolMapping = function(school) {
        var latitudeAndLongitudeOne = new google.maps.LatLng(school.latitude, school.longitude);
        var pos_string_val = latitudeAndLongitudeOne.toUrlValue();
        geo_position_to_school_mapping[pos_string_val] = school;

    };

    var getSchoolForMarker = function(marker) {
        // use the markers geoposition to get the school
        return geo_position_to_school_mapping[marker.getPosition().toUrlValue()];
    };

    var updateMarkerIcons = function(markers) {
        markers.each(function(marker) {
            var school = getSchoolForMarker(marker);
            var grade = getGrade(school);
            var icon = icons[grade];
            marker.setIcon(icon);
        });
    };

    var getGrade = function(school) {
        var info = school.summary;
        var grade = "G";
        if (info.indexOf("IG") !== -1) {
            grade = "IG";
        } else if (info.indexOf("MVG") !== -1) {
            grade = "MVG";
        } else if (info.indexOf("VG") !== -1) {
            grade = "VG";
        }
        return grade;
    };

};
pimpGPsSkolKarta();