Twitter timeline widget height control


I am having an issue on a site where my class=“stream” is projecting a much larger height than it should be. The over all widget is set to the correct height. However the class=“stream” is receiving a height that is 50 px larger than the widget. This is only happening in IE and FF as in Chrome that same class is setting itself to a much smaller height. Is there any way I can control this height with a variable as it is buried deep in an iframe?