Tenho o seguinte trecho de código em javascript que basicamente oculta ou mostra um conjunto do Raphaeljs quando clico nele. Funciona perfeitamente bem no Google Chrome, FireFox e Safari, mas não no Internet Explore

var paper = Raphael(document.getElementById('ADiv'), 450, 490);

var group = paper.set();

var toxicRect = paper.rect(0, 0, 120, 60, 10 );
toxicRect.attr({"stroke-width": 1,
            "stroke" : "#3083BE",
            "fill" : "#D1DFE9"});

group.push( toxicRect );

var toxicRectText = paper.text(60, 25, "Toxic in air\nthrough inhalation");
toxicRectText.attr({"font-size": 12 });
group.push( toxicRectText );

var toxicToConcentrationPath = paper.path("M60 60L60 80")
toxicToConcentrationPath.attr({"stroke-width": 1,
                   "stroke" : "#3083BE"});

group.push( toxicToConcentrationPath );

var concentrationRect = paper.rect(0, 80, 120, 60, 10 );
concentrationRect.attr({"stroke-width": 1,
                    "stroke" : "#3083BE",
                "fill" : "#D1DFE9"});

group.push(concentrationRect);

var conRectText = paper.text( 60, 105, "Is concentration\n> TLV/TWA");
conRectText.attr({"font-size": 12});
group.push(conRectText);

var conRectTextYes = paper.text(50, 135, "Yes  / ");

conRectTextYes.attr({"font-size": 12,
                 "font-style": "italic"});

group.push(conRectTextYes);

var conRectTextNo = paper.text(75, 135, "No");
conRectTextNo.attr({"font-size": 12,
                "font-style": "italic"});

group.push(conRectTextNo); 

var monitorConcentrationGroup = paper.set();

var monitorConcentrationRect = paper.rect(140, 95, 60, 30, 10 );
monitorConcentrationRect.attr({"stroke-width": 1,
                        "stroke" : "#3083BE",
                    "fill" : "#D1DFE9"});

monitorConcentrationGroup.push(monitorConcentrationRect);

var monitorConcentrationRectText =  paper.text(170, 115, "Monitor");
monitorConcentrationRectText.attr({"font-size": 12});

monitorConcentrationGroup.push(monitorConcentrationRectText);

var concentrationToMonitorPath = paper.path("M120 110L140 110")
concentrationToMonitorPath.attr({"stroke-width": 1,
                     "stroke" : "#3083BE"});

monitorConcentrationGroup.push(concentrationToMonitorPath);
monitorConcentrationGroup.hide();


//Actions when clicking on decisions
conRectTextYes.node.onclick = function () {

        monitorConcentrationGroup.hide();
};

conRectTextNo.node.onclick = function () {

        monitorConcentrationGroup.show();
};

Anyone tem alguma idéia? Você pode testá-lo emhttp: //raphaeljs.com/playground.htm cortando e colando e omitindo a primeira linha do script. Clicar em "Não" deve exibir uma caixa, pelo menos no Chrome, mas não no IE ...

Obrigado