if (document.images) { 

// top navigation
			img01on = new Image();      
			img01on.src = "images/lk_homeover.gif"; 
            img02on = new Image();      
			img02on.src = "images/lk_servicesover.gif"; 
			img03on = new Image();      
			img03on.src = "images/lk_portfolioover.gif"; 
			img04on = new Image();      
			img04on.src = "images/lk_approachover.gif"; 
			img05on = new Image();      
			img05on.src = "images/lk_testimonialsover.gif"; 
			img06on = new Image();      
			img06on.src = "images/lk_historyover.gif"; 
			img07on = new Image();      
			img07on.src = "images/lk_itover.gif"; 
			img08on = new Image();      
			img08on.src = "images/lk_careersover.gif"; 
			img09on = new Image();      
			img09on.src = "images/lk_contactover.gif"; 

// portfolio - residential
			img101on = new Image();      
			img101on.src = "images/folio/thumb/bournemouth.jpg"; 
			img102on = new Image();      
			img102on.src = "images/folio/thumb/cherque.jpg"; 
			img103on = new Image();      
			img103on.src = "images/folio/thumb/dell.jpg"; 
			img104on = new Image();      
			img104on.src = "images/folio/thumb/oldtown.jpg"; 
			img105on = new Image();      
			img105on.src = "images/folio/thumb/sovereign.jpg"; 
			img106on = new Image();      
			img106on.src = "images/folio/thumb/weybridge.jpg"; 
			
// portfolio - commercial
			img151on = new Image();      
			img151on.src = "images/folio/thumb/barratt.jpg"; 
			img152on = new Image();      
			img152on.src = "images/folio/thumb/countywharf.jpg"; 
			img153on = new Image();      
			img153on.src = "images/folio/thumb/davidwilson.jpg"; 
			img154on = new Image();      
			img154on.src = "images/folio/thumb/poolequay.jpg"; 
			

// top navigation
            img01off = new Image();      
			img01off.src = "images/lk_home.gif";          
            img02off = new Image();      
			img02off.src = "images/lk_services.gif"; 
			img03off = new Image();      
			img03off.src = "images/lk_portfolio.gif"; 
			img04off = new Image();      
			img04off.src = "images/lk_approach.gif"; 
			img05off = new Image();      
			img05off.src = "images/lk_testimonials.gif"; 
			img06off = new Image();      
			img06off.src = "images/lk_history.gif"; 
			img07off = new Image();      
			img07off.src = "images/lk_it.gif"; 
			img08off = new Image();      
			img08off.src = "images/lk_careers.gif"; 
			img09off = new Image();      
			img09off.src = "images/lk_contact.gif"; 

// portfolio - residential
			img101off = new Image();      
			img101off.src = "images/folio/thumb/bournemouthoff.jpg"; 
			img102off = new Image();      
			img102off.src = "images/folio/thumb/cherqueoff.jpg"; 
			img103off = new Image();      
			img103off.src = "images/folio/thumb/delloff.jpg"; 
			img104off = new Image();      
			img104off.src = "images/folio/thumb/oldtownoff.jpg"; 
			img105off = new Image();      
			img105off.src = "images/folio/thumb/sovereignoff.jpg"; 
			img106off = new Image();      
			img106off.src = "images/folio/thumb/weybridgeoff.jpg"; 
			
// portfolio - commercial
			img151off = new Image();      
			img151off.src = "images/folio/thumb/barrattoff.jpg"; 
			img152off = new Image();      
			img152off.src = "images/folio/thumb/countywharfoff.jpg"; 
			img153off = new Image();      
			img153off.src = "images/folio/thumb/davidwilsonoff.jpg"; 
			img154off = new Image();      
			img154off.src = "images/folio/thumb/poolequayoff.jpg"; 
        }

// Images turn on.

function imgOn(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "on.src");

        }

}

// Images turn off.

function imgOff(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "off.src");

        }

}