Why are img and div widths miscalculated in Chrome?

问题

I use following code to center images horizontally and vertically in DIV
Properties given to DIV is width & height, overflow:hidden, and display:block.

Problem: margin-top and margin-left miscalculated only in Chrome, while code is working perfectly in FF and IE

$('.centerImage').each(function(i) {
    var divH = $(this).parent().height();
    var divW = $(this).parent().width();
    var orgImgH = $(this).height();
    var orgImgW = $(this).width();
    if (orgImgH > orgImgW) {
        $(this).css('width', divW);
        var imgH = $(this).height();
        var mTop = (divH - imgH) / 2;
        $(this).css("margin-top", (mTop < 0) ? mTop : -mTop); //if margin-top value is less than 0 use as is and greater than 0 multiply by -1
    } else {
        $(this).css('height', divH);
        var imgW = $(this).width();
        var mLeft = (divW - imgW) / 2;
        //alert(imgW); alert(mLeft); //chrome bug
        $(this).css("margin-left", (mLeft < 0) ? mLeft : -mLeft);
    }
});

Any ideas?

来源：https://stackoverflow.com/questions/12468124/why-are-img-and-div-widths-miscalculated-in-chrome