browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 

if (browser_name == "Netscape" && browser_version < 2.0)
        {
        roll = 'false';
        }
else if (browser_name == "Netscape" && browser_version == 2.0)
        {
        roll = 'false';
        }
else if (browser_name == "Netscape" && browser_version >= 3.0)
        {
        roll = 'true';
        }
else if (browser_name == "Microsoft Internet Explorer" && browser_version <= 2.0)
        {
        roll = 'false';
        }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0)
        {
        roll = 'true';
        }
else
        {
        roll = 'false';
        }

// Create image objects, preload all active and inactive images.
    { 
        img1on = new Image();          
    img1on.src = "images/mwerkwijze_a.gif";  
        img2on = new Image();          
    img2on.src = "images/mecommerce_a.gif";
        img3on = new Image();          
    img3on.src = "images/mcms_a.gif";
        img4on = new Image();          
    img4on.src = "images/mwebdesign_a.gif";
	img5on = new Image();          
    img5on.src = "images/mpromotie_a.gif";	
	img6on = new Image();          
    img6on.src = "images/mnieuws_a.gif";	
	img7on = new Image();          
    img7on.src = "images/msupport_a.gif";	
	img8on = new Image();          
    img8on.src = "images/tmhome_a.gif";	
	img9on = new Image();          
    img9on.src = "images/tmcontact_a.gif";	
	img10on = new Image();          
    img10on.src = "images/tminloggen_a.gif";	
	img11on = new Image();          
    img11on.src = "images/tmhelp_a.gif";	
	img12on = new Image();          
    img12on.src = "images/tmsitemap_a.gif";                  
        img13on = new Image();          
    img13on.src = "images/tmzoeken_a.gif";
	img14on = new Image();          
    img14on.src = "images/tmprint_a.gif";
	img15on = new Image();          
    img15on.src = "images/tmpdf_a.gif";
	
        img1off = new Image();          
    img1off.src = "images/mwerkwijze_i.gif";
        img2off = new Image();          
    img2off.src = "images/mecommerce_i.gif";
        img3off = new Image();          
    img3off.src = "images/mcms_i.gif";
        img4off = new Image();          
    img4off.src = "images/mwebdesign_i.gif";
	img5off = new Image();          
    img5off.src = "images/mpromotie_i.gif";
	img6off = new Image();          
    img6off.src = "images/mnieuws_i.gif";
	img7off = new Image();          
    img7off.src = "images/msupport_i.gif";        
	img8off = new Image();          
    img8off.src = "images/tmhome_i.gif";
	img9off = new Image();          
    img9off.src = "images/tmcontact_i.gif";
	img10off = new Image();          
    img10off.src = "images/tminloggen_i.gif";
	img11off = new Image();          
    img11off.src = "images/tmhelp_i.gif";
	img12off = new Image();          
    img12off.src = "images/tmsitemap_i.gif";
	img13off = new Image();          
    img13off.src = "images/tmzoeken_i.gif";
	img14off = new Image();          
    img14off.src = "images/tmprint_i.gif";
	img15off = new Image();          
    img15off.src = "images/tmpdf_i.gif";
	}
        
// Function to "activate" images.
function imgAct(imgName) {
    {
    document[imgName].src = eval(imgName + "on.src");
    }
}

// Function to "deactivate" images.
function imgInact(imgName) {
    {
    document[imgName].src = eval(imgName + "off.src");
    }
}