[jQuery] Font-Size in IE 7 and 6 Bug - Size zooms to 960px

[jQuery] Font-Size in IE 7 and 6 Bug - Size zooms to 960px


I have a font size switcher that changes the font size. Works great
with all browsers except IE 7 and 6. In IE, when you click the larger
link, the font size of the div in question balloons to 960px.
Has anyone else experienced this?
Where do I learn how IE declares the font-size?
Any help would be much appreciated. This is driving me crazy.
Here is the JS...
    $('.fontChanger').click(function() {
        var theElement = $('#pageContent').css('font-size'); //Get the font
size
        alert(theElement);
        var textSize = parseFloat(theElement, 10); //Gimme just the number
in base 10
        //alert(textSize);
        var unitOfMeasure = theElement.slice(-2); //Find out what the unit
of measurement is px, em, or % and use that
        //alert(unitOfMeasure);
        if ((this).id == 'fontLarger') {
            textSize += 2;
            //alert(textSize);
            } else {
                textSize -= 2;
                //alert(textSize);
            };
        $('#pageContent').css('font-size', textSize + unitOfMeasure);
        //alert(textSize + unitOfMeasure);
        return false;
    });