function getWindowHeight()
{
    var height = 0;
    if( typeof( window.innerWidth ) == 'number' ) {
      //Non-IE
      height = window.innerHeight;
    } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
      //IE 6+ in 'standards compliant mode'
      height = document.documentElement.clientHeight;
    } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
      //IE 4 compatible
      height = document.body.clientHeight;
    }
    return height;
}

function setCssSizes()
{
    var one = 15;
    var padTitle = 8; /* padding + border (top+bottom) for title */
    var padItem = 20; /* padding + border (top+bottom) for item */
    var total = getWindowHeight() - 4 * ( one + padTitle ) - padItem;
    $$('.accordion_ct').each(function style(obj){obj.setStyle("height:"+total+"px");});
}