<!--
var ok = (document.images ? true : false);
function rollover(whichimg,overimg) {
        if (ok) {
                eval('document.images["' + whichimg + '"].src = ' + overimg + '.src');
        }
}
if (ok) {
        nav1 = new Image;
        nav1.src = "images/nav1_off.gif";
        nav1_on = new Image;
        nav1_on.src = "images/nav1_ovr.gif";
		
		nav2 = new Image;
        nav2.src = "images/nav2_off.gif";
        nav2_on = new Image;
        nav2_on.src = "images/nav2_ovr.gif";
		
		nav3 = new Image;
        nav3.src = "images/nav3_off.gif";
        nav3_on = new Image;
        nav3_on.src = "images/nav3_ovr.gif";
		
		nav4 = new Image;
        nav4.src = "images/nav4_off.gif";
        nav4_on = new Image;
        nav4_on.src = "images/nav4_ovr.gif";
		
		csnav1 = new Image;
        csnav1.src = "images/csnav1_off.gif";
        csnav1_on = new Image;
        csnav1_on.src = "images/csnav1_ovr.gif";
		
		csnav2 = new Image;
        csnav2.src = "images/csnav2_off.gif";
        csnav2_on = new Image;
        csnav2_on.src = "images/csnav2_ovr.gif";
		
		csnav3 = new Image;
        csnav3.src = "images/csnav3_off.gif";
        csnav3_on = new Image;
        csnav3_on.src = "images/csnav3_ovr.gif";
		
		csnav4 = new Image;
        csnav4.src = "images/csnav4_off.gif";
        csnav4_on = new Image;
        csnav4_on.src = "images/csnav4_ovr.gif";
		
		csnav5 = new Image;
        csnav5.src = "images/csnav5_off.gif";
        csnav5_on = new Image;
        csnav5_on.src = "images/csnav5_off.gif";
		
		nav1a = new Image;
        nav1a.src = "images/nav1_snav1_off.gif";
        nav1a_on = new Image;
        nav1a_on.src = "images/nav1_snav1_ovr.gif";
		
		nav1b = new Image;
        nav1b.src = "images/nav1_snav2_off.gif";
        nav1b_on = new Image;
        nav1b_on.src = "images/nav1_snav2_ovr.gif";
		
		nav1c = new Image;
        nav1c.src = "images/nav1_snav3_off.gif";
        nav1c_on = new Image;
        nav1c_on.src = "images/nav1_snav3_ovr.gif";
		
		nav1d = new Image;
        nav1d.src = "images/nav1_snav4_off.gif";
        nav1d_on = new Image;
        nav1d_on.src = "images/nav1_snav4_ovr.gif";
		
		nav1e = new Image;
        nav1e.src = "images/nav1_snav5_off.gif";
        nav1e_on = new Image;
        nav1e_on.src = "images/nav1_snav5_ovr.gif";
		
		nav2a = new Image;
        nav2a.src = "images/nav2_snav1_off.gif";
        nav2a_on = new Image;
        nav2a_on.src = "images/nav2_snav1_ovr.gif";
		
		nav2b = new Image;
        nav2b.src = "images/nav2_snav2_off.gif";
        nav2b_on = new Image;
        nav2b_on.src = "images/nav2_snav2_ovr.gif";
		
		nav3a = new Image;
        nav3a.src = "images/nav3_snav1_off.gif";
        nav3a_on = new Image;
        nav3a_on.src = "images/nav3_snav1_ovr.gif";
		
		nav3b = new Image;
        nav3b.src = "images/nav3_snav2_off.gif";
        nav3b_on = new Image;
        nav3b_on.src = "images/nav3_snav2_ovr.gif";
		
		nav3c = new Image;
        nav3c.src = "images/nav3_snav3_off.gif";
        nav3c_on = new Image;
        nav3c_on.src = "images/nav3_snav3_ovr.gif";
		
		nav3d = new Image;
        nav3d.src = "images/nav3_snav4_off.gif";
        nav3d_on = new Image;
        nav3d_on.src = "images/nav3_snav4_ovr.gif";
		
		nav3e = new Image;
        nav3e.src = "images/nav3_snav5_off.gif";
        nav3e_on = new Image;
        nav3e_on.src = "images/nav3_snav5_ovr.gif";
		
}
function toggle_visibility(id) {
var e = document.getElementById(id);
//alert (e.style.display);
if(e.style.display == 'none')
e.style.display = 'block';
else
e.style.display = 'none';
}
// -->