if (document.images) { 

            img1on = new Image();      
			img1on.src = "/images/lk_overviewover.gif"; 
            img2on = new Image();      
			img2on.src = "/images/lk_introclassesover.gif"; 
            img3on = new Image();      
			img3on.src = "/images/lk_historyover.gif"; 
            img4on = new Image();      
			img4on.src = "/images/lk_testimonialsover.gif"; 
            img5on = new Image();      
			img5on.src = "/images/lk_classesover.gif"; 
            img6on = new Image();      
			img6on.src = "/images/lk_intensivesover.gif"; 
            img7on = new Image();      
			img7on.src = "/images/lk_yogaover.gif"; 
            img8on = new Image();      
			img8on.src = "/images/lk_teachersover.gif"; 
            img9on = new Image();      
			img9on.src = "/images/lk_videoover.gif"; 
            img10on = new Image();      
			img10on.src = "/images/lk_contactover.gif"; 
            img11on = new Image();      
			img11on.src = "/images/lk_videos-over.gif"; 
			img12on = new Image();      
			img12on.src = "/images/lk_tt-over.gif"; 
			
			           
            img1off = new Image();      
			img1off.src = "/images/lk_overview.gif"; 
			img2off = new Image();      
			img2off.src = "/images/lk_introclasses.gif"; 
            img3off = new Image();      
			img3off.src = "/images/lk_history.gif"; 
            img4off = new Image();      
			img4off.src = "/images/lk_testimonials.gif"; 
            img5off = new Image();      
			img5off.src = "/images/lk_classes.gif"; 
            img6off = new Image();      
			img6off.src = "/images/lk_intensives.gif"; 
            img7off = new Image();      
			img7off.src = "/images/lk_yoga.gif"; 
            img8off = new Image();      
			img8off.src = "/images/lk_teachers.gif"; 
            img9off = new Image();      
			img9off.src = "/images/lk_video.gif"; 
            img10off = new Image();      
			img10off.src = "/images/lk_contact.gif"; 
			img11off = new Image();      
			img11off.src = "/images/lk_videos.gif"; 
			img12off = new Image();      
			img12off.src = "/images/lk_tt.gif"; 	
			
        }

// 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");

        }

}