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';
        }

function msover(img)
        {
                if (roll == 'true')
                        {
                        document.images[img].src = eval(img + "_on.src");
                        }
        }
function msout(img)
        {
                if (roll == 'true')
                        {
                        document.images[img].src =eval(img + "_off.src");
                        }
        }
if (roll == 'true')
        {
                main1 = new Image();
                
                link1_on = new Image();
                link1_on.src="http://www.techknowledgyservices.com/graphics/menu_select1_on.png";
                link1_off = new Image();
                link1_off.src="http://www.techknowledgyservices.com/graphics/menu_select1_off.png";

                link2_on = new Image();
                link2_on.src="http://www.techknowledgyservices.com/graphics/menu_select2_on.png";
                link2_off = new Image();
                link2_off.src="http://www.techknowledgyservices.com/graphics/menu_select2_off.png";

                link3_on = new Image();
                link3_on.src="http://www.techknowledgyservices.com/graphics/menu_select3_on.png";
                link3_off = new Image();
                link3_off.src="http://www.techknowledgyservices.com/graphics/menu_select3_off.png";

                link4_on = new Image();
                link4_on.src="http://www.techknowledgyservices.com/graphics/menu_select4_on.png";
                link4_off = new Image();
                link4_off.src="http://www.techknowledgyservices.com/graphics/menu_select4_off.png";
			 
                link5_on = new Image();
                link5_on.src="http://www.techknowledgyservices.com/graphics/menu_select5_on.png";
                link5_off = new Image();
                link5_off.src="http://www.techknowledgyservices.com/graphics/menu_select5_off.png";
			 
                link6_on = new Image();
                link6_on.src="http://www.techknowledgyservices.com/graphics/menu_select6_on.png";
                link6_off = new Image();
                link6_off.src="http://www.techknowledgyservices.com/graphics/menu_select6_off.png";
			 
                link7_on = new Image();
                link7_on.src="http://www.techknowledgyservices.com/graphics/menu_select7_on.png";
                link7_off = new Image();
                link7_off.src="http://www.techknowledgyservices.com/graphics/menu_select7_off.png";

                link8_on = new Image();
                link8_on.src="http://www.techknowledgyservices.com/graphics/menu_select8_on.png";
                link8_off = new Image();
                link8_off.src="http://www.techknowledgyservices.com/graphics/menu_select8_off.png";
			 
                link9_on = new Image();
                link9_on.src="http://www.techknowledgyservices.com/graphics/pricing_on.png";
                link9_off = new Image();
                link9_off.src="http://www.techknowledgyservices.com/graphics/pricing_off.png";
			 
                link10_on = new Image();
                link10_on.src="http://www.techknowledgyservices.com/graphics/services_on.png";
                link10_off = new Image();
                link10_off.src="http://www.techknowledgyservices.com/graphics/services_off.png";
			 
                link11_on = new Image();
                link11_on.src="http://www.techknowledgyservices.com/graphics/response_on.png";
                link11_off = new Image();
                link11_off.src="http://www.techknowledgyservices.com/graphics/response_off.png";
			 
                link12_on = new Image();
                link12_on.src="http://www.techknowledgyservices.com/graphics/process_on.png";
                link12_off = new Image();
                link12_off.src="http://www.techknowledgyservices.com/graphics/process_off.png";
			 			 
                link13_on = new Image();
                link13_on.src="http://www.techknowledgyservices.com/graphics/pricing_on.png";
                link13_off = new Image();
                link13_off.src="http://www.techknowledgyservices.com/graphics/pricing_off.png";
			 
                link14_on = new Image();
                link14_on.src="http://www.techknowledgyservices.com/graphics/services_on.png";
                link14_off = new Image();
                link14_off.src="http://www.techknowledgyservices.com/graphics/services_off.png";
			 
                link15_on = new Image();
                link15_on.src="http://www.techknowledgyservices.com/graphics/response_on.png";
                link15_off = new Image();
                link15_off.src="http://www.techknowledgyservices.com/graphics/response_off.png";
			 
                link16_on = new Image();
                link16_on.src="http://www.techknowledgyservices.com/graphics/process_on.png";
                link16_off = new Image();
                link16_off.src="http://www.techknowledgyservices.com/graphics/process_off.png";
			 
                link17_on = new Image();
                link17_on.src="http://www.techknowledgyservices.com/graphics/pricing_on.png";
                link17_off = new Image();
                link17_off.src="http://www.techknowledgyservices.com/graphics/pricing_off.png";
			 
                link18_on = new Image();
                link18_on.src="http://www.techknowledgyservices.com/graphics/services_on.png";
                link18_off = new Image();
                link18_off.src="http://www.techknowledgyservices.com/graphics/services_off.png";
			 
                link19_on = new Image();
                link19_on.src="http://www.techknowledgyservices.com/graphics/response_on.png";
                link19_off = new Image();
                link19_off.src="http://www.techknowledgyservices.com/graphics/response_off.png";
			 
                link20_on = new Image();
                link20_on.src="http://www.techknowledgyservices.com/graphics/process_on.png";
                link20_off = new Image();
                link20_off.src="http://www.techknowledgyservices.com/graphics/process_off.png";
			 
                link21_on = new Image();
                link21_on.src="http://www.techknowledgyservices.com/graphics/pricing_on.png";
                link21_off = new Image();
                link21_off.src="http://www.techknowledgyservices.com/graphics/pricing_off.png";
			 
                link22_on = new Image();
                link22_on.src="http://www.techknowledgyservices.com/graphics/services_on.png";
                link22_off = new Image();
                link22_off.src="http://www.techknowledgyservices.com/graphics/services_off.png";
			 
                link23_on = new Image();
                link23_on.src="http://www.techknowledgyservices.com/graphics/response_on.png";
                link23_off = new Image();
                link23_off.src="http://www.techknowledgyservices.com/graphics/response_off.png";
			 
                link24_on = new Image();
                link24_on.src="http://www.techknowledgyservices.com/graphics/process_on.png";
                link24_off = new Image();
                link24_off.src="http://www.techknowledgyservices.com/graphics/process_off.png";
			 
                link25_on = new Image();
                link25_on.src="http://www.techknowledgyservices.com/graphics/portal/login_on.png";
                link25_off = new Image();
                link25_off.src="http://www.techknowledgyservices.com/graphics/portal/login_off.png";
        }