jQuery.event.add(window, "load", resizeFrame);
jQuery.event.add(window, "resize", resizeFrame);

function resizeFrame() {
    var height = $(window).height();
    var contentHeight = height - 205; 
    if(contentHeight < 300) {
    	contentHeight = 300;
    }
    $("#navigation").css('height', contentHeight);
		$("#content").css('height', contentHeight);
}