browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
        if (browserName == "Microsoft Internet Explorer" && browserVer >= 3) version = "n3";
        else version = "n2";
        if (browserName == "Netscape" && browserVer >= 3) version = "n3";

         if (version == "n3") {
       	overview_on = new Image();
    	   overview_on.src = "images/l_overview_on.gif";
		    products_on = new Image();
    	   products_on.src = "images/l_products_on.gif";
			who_on = new Image();
    	   who_on.src = "images/l_who_on.gif";
			employment_on = new Image();
    	   employment_on.src = "images/l_employment_on.gif";
			news_on = new Image();
    	   news_on.src = "images/l_news_on.gif";
			contact_on = new Image();
    	   contact_on.src = "images/l_contact_on.gif";
		                                            
       overview_off = new Image();
        overview_off.src = "images/l_overview_off.gif";
		  products_off = new Image();
        products_off.src = "images/l_products_off.gif";
		  who_off = new Image();
        who_off.src = "images/l_who_off.gif";
		  employment_off = new Image();
        employment_off.src = "images/l_employment_off.gif";
		  news_off = new Image();
        news_off.src = "images/l_news_off.gif";
		  contact_off = new Image();
        contact_off.src = "images/l_contact_off.gif";
		}

function ON(imgName) {
        if (version == "n3") {
        imgOn = eval(imgName + "on.src");
        document [imgName].src = imgOn;
        }
}
function OFF(imgName) {
        if (version == "n3") {
        imgOff = eval(imgName + "off.src");
        document [imgName].src = imgOff;
        }
}