Overflow : hidden in FF

Question

I'm having a problem with overflow : hidden content, but only in FF. enter image description here

I have two divs (each side of the vertical arrow, see above) each have overflow:hidden applied masking their respective child div. The child elements are being rotated onscroll event via jQuery. For whatever reason the background image in each of the children elements are not being masked as they should by their parent div.

To see this inconsistency; http://www.pearman.com.au/

Whats strange is the child content appears when inspecting any of the parents CSS properties in Firebug.

edit : find the CSS / HTML / JQuery

This code is run each time the onscroll is updated (alot);

    scrollAnimations.push({ 'start': 0, 'end': 450,
                'callback': function(scrollTop,scrollDirection){ 
                    ran_one.css({
                        '-ms-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        '-webkit-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        '-moz-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        '-o-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        'transform': 'rotate('+ -(scrollTop)*0.4 +'deg)' })
                    }
                });
            scrollAnimations.push({ 'start': 0, 'end': 900,
                'callback': function(scrollTop,scrollDirection){
                    ran_two.css({
                        '-ms-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        '-webkit-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        '-moz-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        '-o-transform': 'rotate('+ -(scrollTop)*0.4 +'deg)',
                        'transform': 'rotate('+ -(scrollTop)*0.4 +'deg)' })
                    }
                });

CSS ;

#rainbow-mask-right{
        width:421px;
        height:421px;
        display:block;
        position:absolute;
        bottom:0;
        left: 50%;
        overflow:hidden;
        }
    #rainbow-mask-left{
        width:421px;
        height:421px;
        display:block;
        position:absolute;
        bottom:0;
        left: 50%;
        overflow:hidden;
        margin-left: -420px;
        visibility:visible;
        }
    #ran-one{
        background:url(images/home/rainbow/ran-dash.gif) no-repeat;
        width:421px;
        height:421px;
        display:block;
        top: 421px;
        position: absolute;

        transform: rotate(50deg);
        -ms-transform: rotate(50deg); /* IE 9 */
        -webkit-transform: rotate(50deg); /* Safari and Chrome */
        -moz-transform: rotate(50deg); /* Firefox */
        -o-transform: rotate(50deg); /* Opera */
        }
    #ran-two{
        background:url(images/home/rainbow/ran-colour.gif) no-repeat transparent;
        width:421px;
        height:421px;
        display:block;
        top: 421px;
        position: absolute;
        left: 421px;
        }
   .set-origin {
    transform-origin:0 0;
    -ms-transform-origin:0 0; /* IE 9 */
    -webkit-transform-origin:0 0; /* Safari and Chrome */
    -moz-transform-origin:0 0; /* Firefox */
    -o-transform-origin:0 0; /* Opera */
    }

and HTML

Overflow : hidden in FF

1 Answers