if (document.images) {
nav_event1_F1 = new Image(234,20); nav_event1_F1.src = "images/nav_event1.gif";
nav_event1_F2 = new Image(234,20); nav_event1_F2.src = "images/nav_event1_F2.gif";
nav_sweep1_F1 = new Image(234,20); nav_sweep1_F1.src = "images/nav_sweep1.gif";
nav_sweep1_F2 = new Image(234,20); nav_sweep1_F2.src = "images/nav_sweep1_F2.gif";
nav_win_F1 = new Image(234,20); nav_win_F1.src = "images/nav_win.gif";
nav_win_F2 = new Image(234,20); nav_win_F2.src = "images/nav_win_F2.gif";
nav_findit_F1 = new Image(234,20); nav_findit_F1.src = "images/nav_findit.gif";
nav_findit_F2 = new Image(234,20); nav_findit_F2.src = "images/nav_findit_F2.gif";
nav_rdrservice_F1 = new Image(234,20); nav_rdrservice_F1.src = "images/nav_rdrservice.gif";
nav_rdrservice_F2 = new Image(234,20); nav_rdrservice_F2.src = "images/nav_rdrservice_F2.gif";
nav_tradetalk_F1 = new Image(234,20); nav_tradetalk_F1.src = "images/nav_tradetalk.gif";
nav_tradetalk_F2 = new Image(234,20); nav_tradetalk_F2.src = "images/nav_tradetalk_F2.gif";
nav_future_F1 = new Image(234,20); nav_future_F1.src = "images/nav_future.gif";
nav_future_F2 = new Image(234,20); nav_future_F2.src = "images/nav_future_F2.gif";
nav_inside_F1 = new Image(234,20); nav_inside_F1.src = "images/nav_inside.gif";
nav_inside_F2 = new Image(234,20); nav_inside_F2.src = "images/nav_inside_F2.gif";
nav_calendar_F1 = new Image(234,20); nav_calendar_F1.src = "images/nav_calendar.gif";
nav_calendar_F2 = new Image(234,20); nav_calendar_F2.src = "images/nav_calendar_F2.gif";
nav_100habitat_F1 = new Image(234,20); nav_100habitat_F1.src = "images/nav_100habitat.gif";
nav_100habitat_F2 = new Image(234,20); nav_100habitat_F2.src = "images/nav_100habitat_F2.gif";
nav_toc_F1 = new Image(234,20); nav_toc_F1.src = "images/nav_toc.gif";
nav_toc_F2 = new Image(234,20); nav_toc_F2.src = "images/nav_toc_F2.gif";
nav_cnet_F1 = new Image(234,20); nav_cnet_F1.src = "images/nav_cnet.gif";
nav_cnet_F2 = new Image(234,20); nav_cnet_F2.src = "images/nav_cnet_F2.gif";
ind_feature_r02_c1_F1 = new Image(350,423); ind_feature_r02_c1_F1.src = "images/ind_feature_r02_c1.jpg";
ind_feature_r02_c1_F2 = new Image(350,423); ind_feature_r02_c1_F2.src = "images/ind_feature_r02_c1_F2.jpg";
	}
	
	/* Function that swaps images. */
	
	function di20(id, newSrc) {
	    var theImage = FWFindImage(document, id, 0);
	    if (theImage) {
	        theImage.src = newSrc;
	    }
	}
	
	/* Functions that track and set toggle group button states. */
	
	function FWFindImage(doc, name, j) {
	    var theImage = false;
	    if (doc.images) {
	        theImage = doc.images[name];
	    }
	    if (theImage) {
	        return theImage;
	    }
	    if (doc.layers) {
	        for (j = 0; j < doc.layers.length; j++) {
	            theImage = FWFindImage(doc.layers[j].document, name, 0);
	            if (theImage) {
	                return (theImage);
	            }
	        }
	    }
	    return (false);
	}