[jQuery] Survey Check fails in Internet Explorer

[jQuery] Survey Check fails in Internet Explorer


Hello everybody,
Ok so i am a complete beginner in both jQuery, JavaScript and english.
I build a script to check a survey for empty questions, if so show a
new tr and make a list of empty questions. If the script detects no
errors it will submit the form.
It worked like a charm in firefox but on no other browser it seemed to
work.
function checkSurvey(){
    $(".error").removeClass("error");
    $("#error").addClass("error");
    errormsg = '';
    error = false;
    $(".question").each(function(){
        if ( $(this).find('input:checked').length>0){
            i = this.id.substr(2);
            errormsg += '<a href="#'+this.id+'">Fout bij vraag '+i+'</a><br /