<!--
var ok = (document.images ? true : false);
function rollover(whichimg,overimg) {
        if (ok) {
                eval('document.images["' + whichimg + '"].src = ' + overimg + '.src');
        }
}
if (ok) {
        aboutnav1 = new Image;
        aboutnav1.src = "images/aboutnav1_off.gif";
        aboutnav1_on = new Image;
        aboutnav1_on.src = "images/aboutnav1_ovr.gif";
		
		aboutnav2 = new Image;
        aboutnav2.src = "images/aboutnav2_off.gif";
        aboutnav2_on = new Image;
        aboutnav2_on.src = "images/aboutnav2_ovr.gif";
		
		aboutnav3 = new Image;
        aboutnav3.src = "images/aboutnav3_off.gif";
        aboutnav3_on = new Image;
        aboutnav3_on.src = "images/aboutnav3_ovr.gif";
		
		aboutnav4 = new Image;
        aboutnav4.src = "images/aboutnav4_off.gif";
        aboutnav4_on = new Image;
        aboutnav4_on.src = "images/aboutnav4_ovr.gif";
		
		aboutnav5 = new Image;
        aboutnav5.src = "images/aboutnav5_off.gif";
        aboutnav5_on = new Image;
        aboutnav5_on.src = "images/aboutnav5_ovr.gif";
		
		aboutnav6 = new Image;
        aboutnav6.src = "images/aboutnav6_off.gif";
        aboutnav6_on = new Image;
        aboutnav6_on.src = "images/aboutnav6_ovr.gif";
		
		aboutnav7 = new Image;
        aboutnav7.src = "images/aboutnav7_off.gif";
        aboutnav7_on = new Image;
        aboutnav7_on.src = "images/aboutnav7_ovr.gif";
		
		aboutnav8 = new Image;
        aboutnav8.src = "images/aboutnav8_off.gif";
        aboutnav8_on = new Image;
        aboutnav8_on.src = "images/aboutnav8_ovr.gif";
		
		aboutnav9 = new Image;
        aboutnav9.src = "images/aboutnav9_off.gif";
        aboutnav9_on = new Image;
        aboutnav9_on.src = "images/aboutnav9_ovr.gif";
		
		aboutnav10 = new Image;
        aboutnav10.src = "images/aboutnav10_off.gif";
        aboutnav10_on = new Image;
        aboutnav10_on.src = "images/aboutnav10_ovr.gif";
		
		aboutnav11 = new Image;
        aboutnav11.src = "images/aboutnav11_off.gif";
        aboutnav11_on = new Image;
        aboutnav11_on.src = "images/aboutnav11_ovr.gif";
		
		viewdemo = new Image;
        viewdemo.src = "images/about_photo_viewdemo_off.gif";
        viewdemo_on = new Image;
        viewdemo_on.src = "images/about_photo_viewdemo_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';
}
// -->